Nightmare Fuel / Halo
I am a monument to all your sins.
"We exist together now. Two corpses in one grave..."
The Gravemind

  • Everything Flood-related. Especially the oozing infected pustules which spewed enemies when shot, and getting to see living allies and enemies mutate into Flood on screen.
    • Not to mention that if you manage to shoot an infected soldier in a way that doesn't make it explode, and walk up to its body, you can see one clinging to the spine…
    • Perhaps the creepiest parts in Halo 3 are when the Flood start talking to you. Hearing the Gravemind cursing and taunting you as his minions swarm you from every direction is chilling.
    • Bungie recently had an article that talked about the creative origin of the Flood. Upon being shown a single still picture of just one Flood form, the ESRB demanded the game be given an M-Rating. And that's without the lovely things mentioned above.
    • The psychotic Marine in Halo: Combat Evolved, as well as the insane one considering suicide in Halo 3 add to the horrific atmosphere.
      • Same voice actor for both. That guy is disturbing in-character.
    • The first encounter with the Flood in the first Halo. The downed Pelican ("We're under attack by an unknown enemy! It isn't Covenant!"). The abandoned artillery pieces, all facing away from you. The grunts that used to flee at the mere sight of you run right into your kill zone in a panicked retreat from something even scarier. Strange shadows and noises seems to follow you through the trees. "Allies" appears on the HUD, only to disappear almost immediately without any trace. You follow the trail of carnage into a vast, underground complex, all painted in Covenant blood and deserted save for one man; a wounded Marine so insane with terror that he can't tell friend from foe. You wander deeper and deeper into the ancient ruin, and finally find what's left of the rest of his unit. You download the feed from one unfortunate soldier's helmet camera, watch the entire squad get slaughtered... and then your radar goes wild.
      • Even Master Chief looked briefly disturbed after watching the video feed.
      • And the thing is, is that their introduction was a total surprise. There had been no signs in the instruction manual, or anything in the game that indicated that it was going to turn into a horror movie. Yes the grunts were running away, but that could have been from anything. Everyone remembers when they first walked into the last room, and suddenly a bunch of red dots appear on their radar, and then these jellyfish appear out of nowhere and start jumping at the screen.
      • The infection forms seem to bounce off your shields causing only minimal damage, a burst from the assault rifle can take down a lot of them at once. Surely the flood are only a true threat for unarmored Marines, not a Mjolnir equipped super soldier like you. This is going to be easy. The combat forms show up...
    • One line that the Halo 3 a marine said gives a good description of an infected person: "I could see it crawling, SLIDING AROUND BENEATH THEIR SKIN!"
    • Fun fact: according Halopedia, the Flood are extragalactic. They've already destroyed at least one galaxy.
      • That's actually a bit in question with the revelations of the newest Halo -book (canonical status unconfirmed) - but it's no less nightmare fuel, as the Flood in this book is apparently a misplaced revenge from Ancient Aliens - precursors to even the Forerunner, possibly precursors to even the actual Precursor race of the series.
      • The Forerunner Trilogy is canon, and elements of it will be incorporated in Halo 4. The second book of the trilogy, which just came out recently, revealed that the above was in fact, a deliberate deception on the part of the Flood. The "last" Precursor is in fact a Gravemind. While there may be a link between the Precursors and the Flood, the second book a goes a long way in resolving the discrepancies between the Forerunner Trilogy and the video game trilogy.
    • In Halo 3, technology finally allowed for the real-time conversion of Elites, Brutes, and Marines into Flood forms. It's creepy enough when an infection form jams it's way into a corpse... but it's way worse when they manage to infect a still-living target.
    • And to cap everything else about the Flood... Meet ophoicordyceps unilateralis, or, if you prefer, the real-life Flood. Thankfully it only infects ants... so far.
  • Adding to the creepiness of Halo 3, nearly all of Cortana's transmissions are either outright skin-crawling in their delivery, if not outright terrifying, with some carrying threatening tones in her voice.
    • What's worse is that in "Cortana," as the level progresses, Cortana's transmissions become more and more frantic and confusing, eventually becoming incoherant screams of pain... before she suddenly starts speaking in a lifeless monotone, rattling off her serial number. Not only that, at that point, her graphics turn from blue to green.
    • "It was THE COIN'S FAULT! I wanted to KEEP YOU SAFE! Make you STRONG!" Made a thousand times creepier if you've read The Fall of Reach and know the significance of that transmission.
    • A collection of lies, that's all I am! Stolen thoughts and memories!
    • This is UNSC AI Serial Number CTN 0452-9. I am a monument to all your sins.
    • Cortana has been captured and tortured. She has something that the Gravemind wants, and he will take it by force. As an AI, Cortana can't be raped in the traditional sense, but the Unfortunate Implications are still very much there. I hope the gravemind suffered before he died for what he did to her.
  • The Flood music themes. Features Ominous Ethereal Choir, Psycho Strings, and Scare Chords. Especially the one during the level "The Oracle" that has distorted reversed voices (during the battle between the Heretics and the Flood in the lab).
    • And here's this fun little message from the Gravemind if listen to the halo 3 flood theme backwards: "Side by side we march as one. Humans and elites will die. The earth will fall if we strike together. So forth shall all life."
  • Browsing the terminals in Halo 3; between the lack of noise in many areas you find them in, the odd "swooping" sounds as you interact with them, the random alarm prompts and the oddly incoherent messages based around the apocalypse of the Forerunners and talking about the death of millions in many cases, it all adds together into a Nothing Is Scarier form of creepiness.
    • "I SEE YOU RECLAIMER". Even more creepier than you realize that the one who sent those words was Mendicant Bias, the Forerunner A.I. who betrayed his masters for the Flood, which caused the first activation of the Halos. The final (Legendary) Terminal is almost heartwarming, though.
  • The Gravemind is a particularly frightening being that truly lives up to being a Eldritch Abomination, thanks to Voice of the Legion and its creepy competency at delivering breaking speeches and corrupting people to evil. Its appearance, particularly its graphically updated one pictured above, doesn't exactly help matters either. Plus, there's no telling where those awful tentacles will pop up next...
  • Captain Keyes' fate, getting turned into an immobile mass of flesh, only to get the sweet release of death when Master Chief burns him.
    • According to the second book, he was slowly losing all his memories as the parasite took over. Torwards the end he was struggling to remember his own name! Furthermore, if you'd been around five minutes quicker, you'd be able to save him.
    • Not only that, but in the game, at the start of that particular level, you start RIGHT OUTSIDE the room he's in, but of course you need to do the rest of the level first. Just take a peek through those grates to the right..
    • In Halo: Anniversary, under him there's a terminal containing his last moments from his point of view. He's repeating his serial number, and they're rifling though his memories...We see Miranda, and Dr. Halsey, and those memories are being stolen, and he knows it, and his voice keeps switching between normal and Flood-toned. And then at the end, he swears "You will not have me." And then the Flood speak again, and now it's the Gravemind: "We already do."
  • Possibly Gravemind's creepiest line in any game. After Truth dies and Gravemind betrays you, massive tentacles burst up from beneath the platform the Chief and the Arbiter are on. This is then followed by insane, diseased laughter, followed by this:
    Gravemind: Now the gate has been unlatched, headstones pushed aside...corpses shift and offer room...a fate you must abide!.
    • This is not your grave...*incomprehensible gurgle*...but you are welcome in it.
  • The level Cortana in Halo 3. There's a reason that's the least-played level!
    • "We exist together now. Two corpses in one grave".
    • For those who don't know, this level is the one where you essentially break into the Flood's house in order to rescue Cortana. The "house" was originally a spaceship, but almost every wall, floor, and ceiling is covered in "Flood matter." Its kind of like the halls of an insect hive. The Flood will attack from all sides (including up), as you try to navigate this somewhat-nightmarish landscape. It doesn't help that the level is somewhat confusing; many players get turned around easily even after several playthroughs. As you fight through it, you get to listen to Cortana's tortured, disjointed rantings and Gravemind's apocalyptic proclamations.
      • As you progress through that level, the Cortana moments get increasingly crazy, and horrfic, while the Gravemind moments get more and more "insane evil genocide monster."
      • "This is UNSC AI Serial Number CTN 0452-9. I am a monument to all your sins".
      • "Gravemind: (intrigued) "And yet, perhaps a part of her...remains?" (maniacal laughter, fades into Cortana's'' maniacal laughter). Her laughter is really unsettling.
    • The background noise heard throughout the level. Especially considering that the noises being made aren't made by any flood forms you encounter, leaving what horrors could be found on High Charity up to one's imagination.
  • Pvt. Jenkins, who got overran by the Flood and remained conscious after transformation! In the second book, he made attempts to throw himself into harm's way, but as luck would have it, he ended up being the only flood form they captured alive for study. Throughout the book, his mind and the flood's mind are battling it out.
  • Regarding non-Flood examples, pretty much all the aliens in the series look frightening in some way, whether they actually look scary like the Jackals or are just scary to fight against like the Hunters. It's made even worse in the first game by the fact that half the time you're in dim corridors and it's incredibly quiet, because of the suspense. Some more examples include:
    • The Grunts. Yes, you heard right. They look really vicious without their mask, and we've all had at least one time where a Grunt saw us without knowing it and shrieked, causing us to jump. Fiends.
    • The Elites (especially camouflaged Zealots) when they roar or when they're right next to you and you bump into them (in Halo 2, they give a shriek of surprise as well!).
    • The Hunters have no actual limbs. They're comprised of a bunch of worm-like things (1.4 meters) called Lekgolo that come together under their armor. They also make up the Scarabs.
      • You haven't seen a Hunter in action until you've seen a pair use those damn Assault Cannons (essentially, semi-auto high-explosive rocket launchers with Bottomless Magazines) to wipe out more than 15 friendly Marines in less than 10 seconds during "Tip of the Spear" in Halo: Reach note . You duck behind a rock, reload your assault rifle, and when you come back into action, every last Marine which just got dropped from that Pelican is gone in a horrible subversion of The Cavalry.
  • When you kill a Brute, you may see his eyes twitch.
  • Halo Reach is introducing a new piece of wildlife called the Gúta that could give the Flood a run for its money. For those not in the know, think a Deathclaw but with elongated features, and are actually capable of killing entire squads of Elites, which are still feared at this point. The kicker? You encounter these things at night.
  • 343 Guilty Spark having a complete mental breakdown at the last level of Halo 3 and goes through a rampancy. It's very scary to see such an affable, if slighty annoying, character completly turning 180 and becoming an extremly dangerous foe who has lost his mind. Before it, you don't expect him to be a harmful threat but then he proves you wrong big time by killing Johnson and burning of John 117 (read:you). When you fight him, nothing works. Grenades, pistol, machine-guns, sniper rifles, plasma guns, anti-tank weapons - none of them work. The only thing you can do is make him snap even further, and pretty soon you're start feeling your heart pumping from desperation alone. The red eye works too for the fear factor.
  • The encounter with Hunters in The Silent Cartographer. It starts with being dropped on to the beach by a pelican, surrounded by allies, as you storm through countless easy covenant enemies and enjoy the pretty scenery around you, you even get a warthog halfway through, making the level even easier than it already is. But wait, the trees up ahead look too dense to drive through, so you begrudginly leave your allies behind and head forward, figuring that if it was easy so far, what's the worse that could be up ahead? Suddenly you come upon a clearing, and in it are two, huge, lumbering, armor plated aliens making loud groaning and roaring sounds in the distance. Though intimidated slightly, you step forward, figuring that they probably can't be as tough as they look, only to have them shoot a series of explosive green blasts at you. You try to close the distance a bit and hope that melee will be a bit more effective, only to fly several feet forward, after realizing that one of them has hit you from behind. The next one then charges at you, like a roaring, alien freight train, and swings it's massive arm at you, killing you in an instant.
    • In Truth and Reconciliation, two of them drop down from the grav lift while ominous music plays. At night. It's arguably worse.
      • To make it worse, the encounter on Truth and Reconciliation makes them seem unstoppable if it's your first time playing through a Halo game. Anyone who played Halo: CE as their first Halo game knows the sheer terror that pair brought upon you, cutting through all of your troops like their were nothing, deflecting sniper rifle bullets straight off of them, and grenades only making them flinch.
      • Slightly deflated in horror when you eventually discover that a single pistol shot to their weak spot ( their back ) takes them out.
  • The hidden messages in the second and third game. In Halo 2's soundtrack, we have Mausoleum Suite, a song that plays during the intro cut-scene of the The Arbiter and during the confrontation with Tartarus in The Great Journey. In this track, a voice can be heard in the background. At first, it seems intelligible, but play the song in reverse and you get this: Fans like to speculate that this is Mendicant Bias. In Halo 3, we have Dread Intrusion, played during the level Flood Gate. A voice similar to that of Gravemind's is heard. Play it in reverse and you get this: In the level The Covenant, when the flood shows up, the song Black Tower is played. Again, a voice is heard. Play it backwards, and be treated to this: This appears to be a reference to T.S Elliot's poem The Hollow Men.
  • "Dread Intrusion" off the Halo 3 soundtrack. It starts off in the typical, already-creepy Flood themes, but soon adds backmasked speech from the Gravemind. The middle segment is an almost-heroic sounding drum but reminiscent of "Ghosts of Reach" from the Halo 2 soundtrack, but when it gets to the pause, instead of returning with doubled-up awesome, you hear a strange wailing screech come in and it returns to creepy ambiance music.
  • The soundtracks themselves offer many terrifying tunes:
  • The Flood in the Forerunner novels. Apparently, before they were the twisted space zombies we all know and love, it was simply a dust which genetically altered certain animals and spread benignly via consumption. Eventually, it spread to humans, subtly altering their behaviour, until, when it became a widely known problem, it didn't bother concealing its nature. To quote a description of how it was spread:
    "Infected individuals combined their resources to force other humans to become infected- usually by cannibalism of a sacrificial individual, induced to grow to prodigious size before being consumed while still alive."
    • What it did to some Forerunners was closer to the version seen in the games, though more horrific. One variation was basically dozens of Forerunners mashed together into a huge snake... centipede-beast... thing, complete with scales grown over their skin, which moved using dozens of limbs stuck in its side. And the Forerunner (at least, the one whose head was melted into its chest) was fully conscious.
    • In addition to the graphic descriptions and chilling implications, the Flood's ability to corrupt is shown to extend far beyond mere biological matter.
      • The Flood's ability to subvert A.I.s was hinted at via Cortana and Mendicant Bias in Halo 3, but this ability was taken to it's logical extreme when warring against the Forerunners, who were hit with a full on logic plague. Essentially, the flood was able to dominate and enslave A.I.s and non-sapient data even faster than biological beings, and since the Forerunners utilized ancillas in almost every aspect of their lives, everything they relied upon started to betray them even before the flood attacked. Imagine an evolving, self aware computer virus that doesn't just corrupt data, but turns it actively malevolent.
    Judicial Network has been compromised, attempting THERE IS PEACE IN SUBMISSION. —- Do not access judicial network! Do not access!
    All forerunner judicial proceedings are now on hold. All forerunner culture is now on hold.
  • Think of Master Chief from the Covenant perspective. He's just one soldier, but he is perfectly capable of picking off entire squads one by one until every last fighter is dead. And then move on to repeat the process ad infinitum.
  • Type-33 Guided Munitions Launcher, more infamously known as the Needler, is basically a terror weapon incarnate. Homing crystalline spikes that not only embed themselves in your flesh, also explode, breaking bones displacing organs and tissue, further dispersing tiny flechettes of crystal in and near the wound, and commonly to nearby people. If hit by multiple shards you are as good as dead, but just one is incredibly dangerous.
  • Flood maps in Halo Wars occasionally have what sounds very much like someone shrieking "HELP ME!" as a random background noise.
    • The level Shield World sometimes has one of the marines complain that he was bitten or scratched (by the Flood) and is starting to feel strange...
  • The entire purpose of the Halo array, and the way it's slowly unveiled to you in Halo: CE. At first Halo is just presented as a mysterious megastructure, there's hints that it was built by the Forerunners but its true purpose is unknown. Then you encounter The Flood. Along comes Guilty Spark who explains that Halo is a weapon designed to destroy The Flood. All well and good right? Then, just as you're about to activate Halo, Cortana explains its true function: Halo doesn't kill The Flood, it kills anything The Flood can infect. Each of the 7 Halo rings can emit a destructive pulse that wipes out just about all sentient life within a 25,000 light year radius. Because the Forerunners figured that the only way to stop The Flood was to starve them to death, and the only way to do that is to kill an entire Galaxy. And as Halo 2 points out, the entire Covenant religion is based upon deliberately activating the rings.
    • One of the terminals in Halo: CE Anniversary has a (soon to be rampant) 343 Guilty Spark lament about how alone he is on Halo, guarding a weapon that has no target...which he says he could tune to any target.

Halo 4: Forward Unto Dawn
  • The entire Covenant attack on Corbulo Academy. Even for hardened fans of the series who have gotten used to the Covenant presence in the franchise will probably be utterly terrified of them here, since A) the attack is at night B) it's completely a surprise and they kill everyone at the Academy besides Lasky, Orenski, and Sully, C) it's at the very start of the war, so nobody knows what in the hell they're being attacked by, and D) the entire attack is seen through the eyes of undertrained teenage cadets.
  • The screams of people falling from a destroyed Space Elevator. There's some very appropriately squishy sound effects to go along with the impact. To think the ones killed by plasma fire were the lucky ones.
    • Dimah was last seen on the Space Elevator. One of the falling bodies is wearing an all-white uniform.
  • The Elite slicing the statue in half at the end of Episode 3.
    • In that same note, Cortana's Gollum -esque "arguments" with her rampant mind in the episode's teaser:
    Cortana (shrill, demonic voice): I hate you!
    (as glowing sphere flashes bright red and distorts, unusually high-pitched voice, shocked): Cortana!
    (shrill, demonic voice): STOP IT!
    (normal Cortana voice) I've made up my mind. (young girl's voice) If I'm going to die aboard this ship, then Chief will suffer the same fate as me!
    (Elderly woman's voice): Cortana, control yourself!
    (young woman's voice): I've sacrificed everything for him!

  • Unlike in the games, where Elite's cloaking has a semi-visible distortion effect a la the Predator, in FUD, it's completely invisible. J.J.'s death is a illustrates how terrifying this is, as he literally walks into an Elite without seeing it.
  • In Episode 4, the cadets ask why the Chief came to save them; he responds that they were the last people still alive. The cadets are surprised that they're the sole survivors of the Academy, but Chief corrects them; they're the last surviving people on the planet.
  • John-117, the Master Chief, a seven-foot tall cyborg and a striding force of death and destruction is only fifteen years old in 2526. Meaning he's barely old enough to have a driver's license. Meaning he's even younger than the frightened cadets he's saving from certain death at the hands of monstrous, alien zealots. The fact he does this all with an almost robotic calm makes the human cost of the Spartan-II project seem that much more horrible.
    • Reinforced in the end of episode 5. The surviving cadets are aboard a Pelican with John-117, Fred-104, and Kelly-087. Kelly and Fred take off their helmets (They look at the Chief, who keeps his on and looks away), leaving the cadet surprised at how young they look, leading to this exchange:
    Sully: How old are all of you?
    Kelly: That's classified.
  • Episode 4 shows just how messy a supercombine can be. Colonel Mehaffy was damn near liquified.

Halo 4
  • Some of Cortana's rampant screaming. For instance, this line scares people:
    • This line may also give you chills.
    Cortana: Do you know what that condescending bitch said to me after our first game of chess?!
    • To put it in perspective, she's talking about Halsey, her "mother". The words she said to her after the game were '"Quando il gioco è finito, il re e il pedone vanno nella stessa scatola. note 
    • One of Cortanas lines in the level "Composer": Why should we save them? It's like something out of Dead Space.
  • Promethean Knights, their helmets opens up to a glowing skull, which screams at you.
  • The Composer must be powered by Nightmare Fuel, because it is positively oozing horror:
  • The cutscene for Spartan Ops Episode 2 has Dr. Glassman being sucked up by a Forerunner artifact, complete with Capt. Lasky futilely trying to save him. With how his body breaks into glowing orangle particles just before he gets pulled in, it looks disturbingly like he's being Composed.
    • Episode 3 reveals Glassman's fate. On the plus side, he hasn't been composed. On the minus side, he's been captured by the Covenant, and apparently is offering to trade information for his life; with Jul 'Mdama suggesting he'll end up Rewarded as a Traitor Deserves after helping them. Also, the Artifact is apparently accessing systems aboard the Infinity, gathering information and transmitting it to Requiem.
  • Episode 5 shows that the Prometheans Majestic Squad are fighting are not ancient humans, but the victims from the New Phoenix incident six months before. Thorne said he knew people there. He would have been "killing" his friends and family... again and again and again.
    • I'm pretty sure its just once per person. Its kind of hard to restore data after its contain has been blown apart by a half dozen 8-gauge shotgun shells. Still quite disturbing, though.
      • It's not only entirely possible for Knights to come back after their body is destroyed, it's the entire purpose of the Promethean Watchers. Which adds an entirely new urgency to killing Watchers in gameplay: not only do they bring enemies back, they're bringing back those same people who composed again and again and again...
  • Episode 6, Chapter 5 has Crimson sent in after another Spartan team, Switchback, needed help taking down a Harvester guarded by Covenant and Prometheans. When Crimson arrives, all that is found are Switchback's removed IFF tags, nothing else. No clues are given to what exactly happened to them. The fact that the IFF tags were removed seem to indicate that they were captured. For what purpose? Likely nothing good.
    • Becomes Nightmare Retardant when it's shown that they were just captured, and only the leader was killed.
  • Episode 7, in general. The Infinity is attacked by Covenant and Prometheans.
  • The Flood combat in the War Games. Especially on a dark map, like Shatter. You're just looking around, watching fo-WHAT THE HELL WAS THAT?!
    • Doesn't help that the Flood can use Armor Abilities as well. Seeing a Flood rocket towards you using it's thruster pack is nerve racking. Especially if your CQC aim is bad.
      • Also, the Flood models themselves. Look at one close up, and you'll see what I mean.
      • Specifically, you're looking at the first-ever Spartan Combat-Forms. Thank god they're just based on speculation as far as canon is concerned.
  • Imagine being Roland when Halsey activates the former's override. Chances are, he won't want to hear the phrase "undid iridium" ever again.
  • Halsey's severed arm in the Spartan Ops epilogue.
The Forerunner Saga
  • The Precursors. Once driven by an obsession to create life, they were nearly wiped out by one of their creations, the Forerunners. They are not happy about it, and deliver a terrifying message to the Forerunners:
    Gravemind/Precursor: Our urge to create is immutable; we must create. But the beings we create shall never again reach out in strength against us. All that is created will suffer. All will be born in suffering, endless grayness shall be their lot. All creation will tailor to failure and pain, that never again shall the offspring of the eternal Fount rise up against their creators. Listen to the silence. Ten million years of deep silence. And now, whimpers and cries; not of birth. That is what we bring: a great crushing weight to press down youth and hope. No more will. No more freedom. Nothing new but agonizing death and never good shall come of it. We are the last of those who gave you breath and form, millions of years ago. We are the last of those your kind defied and ruthlessly destroyed. We are the last Precursors. And now we are Legion.
  • The Librarian, leading an expedition to a nearby galaxy, finds a primitive society of Forerunners seeded on a planet millions of years ago. A recognizable Forerunner race inhabits the planet, but at close examination, it turns out that everything on the planet was once Forerunner. Every animal and plant. The team observes a herd of cattle with many recognizable Forerunner features. Imagine living on a planet where everything, from the grass you stand on to the animals you eat, is descended from people no different from you.
  • The Flood gains new levels of nightmare in this trilogy. The first incarnations that encountered humanity spread by forcing uninfected humans to consume infected humans forced to grow to horrendous sizes. Infected Forerunners were molded into horrific beasts: blobs of flesh with faces and limbs protruding, some still conscious, centipedes of mashed together Forerunners with scaled skin, arms and legs protruding from the sides, a twisted face melted into the thing's chest.
    • A new classification of Flood was identified in the later years of the Forerunner-Flood War: the Key Mind. In short, a Gravemind created from an entire planet's ecosystem.
  • The Ur-Didact's fate. He was trapped in that Cryptum of his for 100,000 years, and because the Domain was destroyed (something which ruined the Librarian's plan when she put him in stasis), he was left all alone, with only his madness for company. No wonder he's ruthless and genocidal by the time John frees him.
  • The true relationship between the the Forerunner, Humans, and Precursors. They did indeed reject Forerunners for the Mantle and intended for humans to hold it. The Forerunners did not accept this and drove the Precursors from the galaxy and beyond. Some Precursors survived by going dormant, others became powder that could regenerate their old selves in time, but time rendered it defective and it only created sickness and disease. The Precursors vowed that none of their creations would rise against them again and that all life would suffer and be in perpetual agony, through their new form as the Flood.
  • Broken Circle gives us a delightful example in the Gravitational Refinement Device. Artificial Gravity, selectively taken Up to Eleven as a means of torture. The device can flatten the flesh and bone in a limb. The blood is either forced out away from the victim, or can be moved up the body, into untargeted areas.
  • Certain aspects of the Hunt the truth ARG. Halo usually is one of the few franchises that doesn't portray highly unethical Super Soldier programs as anything but terrible due to the immense success of the Spartins and all the good they've done. Journalist Ben Jiraud blows the lid off the lid off the entire program that ONI has covered up for decades. He describes in horrifying detail what it would be like to be a sentient clone with the mind of a child with the soul purpose of dying. All of this so the families of the kidnapped Spartans to be would think their children were actually dead.

Halo 5
  • Legendary Ending. Rogue!Cortana has a Halo.
  • It's hard to say which is worse: Cortana is still rampant, or she's not rampant and just mad with power. Either way, when she shows her true nature to Fireteam Osiris, her ranting and sneering is just chilling. Even worse is that she's utterly convinced she's in the right, that the Spartan-IV's and their kind deserve to die and that Chief will agree with her when she wakes him from stasis in ten thousand years.
  • The Argent Moon, the derelict ship of the eponymous second mission that Blue Team is sent to recover from Covenant forces. At first you could be forgiven for thinking that the Covenant found it and killed everyone aboard. But it turns out, the Moon was already a Ghost Ship long before Kig-Yar scouts stumbled upon it. ONI scientists had been working on an airborne bioweapon, and it somehow got loose. The result, as hinted by numerous dessicated corpses with an odd residue beneath them, was everyone aboard the entire vessel dying horrifically - according to a record by the shipboard AI, those who were at ground zero for the containment breach (who died instantly as their soft tissues liquefied as a result) were "the lucky ones".
  • Hearing the Jackals speak English for the first time in the franchise is a little jarring.
  • There's an Easter Egg on the multiplayer map "Rig". While the trigger for it is simple , the result isn't. You hear a piercing screech as a rig on the horizon is suddenly lifted from below by a titanic fucking Sand Worm that makes Dune's sandworms look like maggots. One can only hope that no one was on that rig.

Alternative Title(s): Halo 4 Forward Unto Dawn, Halo 4