How did Sharpe get the public to accept the idea of Arkham City? Well, Blackgate was gutted by an electrical fire shortly before the events of Arkham Asylum. And during the events of the game, Batman blows up several walls and every force field generator in the complex, plus Ivy wrecked a lot of buildings with her out-of-control plants. In addition, most of the guards and staff were killed by Joker's thugs. Between the wrecked infrastructure and the understaffed security force, Sharpe can honestly state that Arkham isn't secure enough to hold dangerous criminals at the moment. Something has to be done to create a new holding facility for Gotham's criminal population while both of its primary jails are out of action. In addition, one of the comics Sharpe tells the public that Arkham City will have its own social services and health care. Technically it's true. They are just in incredibly poor shape.
The two Russian henchmen wield a sickle and hammer when you fight them. Though amusingly, the guy with the sickle is in fact a capitalist, and he and his brother who used to be conjoined got themselves separated due to their political differences.
Why are all of Gotham's most notable locations as noted in the comics such as the Iceberg Lounge and Crime Alley all conveniently located in close proximity to each other? Because they are in the slums, where almost all of the street crime takes place. Batman mainly beats down on street crime, so the places he'd frequent most are in the slum, now made into Arkham City. The fact that most crime takes place in the slums explains how Batman manages to patrol all of Gotham every night, and why the criminals keep saying Batman can be 'everywhere at once'.
How does a weak, clearly unstable and untrustworthy guy like the Mad Hatter manage to catch so many criminals from various powerful gangs under his hypnotism? Check the sign outside the room you fight him in: It says "Live Nudes". That's right, criminals came into the Mad Hatter's room looking for nude girls, and when you're that stupid and desperate for girls, your mind tends to be extremely weak...
Mad Hatter usually targets blonde girls and women as part of his Alice in Wonderland mania; you first see him when Batman rescues Vicki Vale, a blonde. It's a hint that he's going to abduct her, so it's even more surprising when he manages to kidnap you, on top of the pretty damn impressive way he accomplished it.
Why would Talia, a member of the League of Assassins, not kill Harley and instead tie her up? She probably was going to, until Harley told her she was pregnant.
Ra's and his tool:
Arkham City reveals that Gotham has a naturally occurring Lazarus Pit right underneath it, and has had for at least a century, probably longer. Gotham also has a long history of darkness and insanity. What is one of the known side effects of Lazarus Pit exposure? Insanity. So, why does Gotham have the problems it does? Because the whole populace, for centuries, has been suffering low level uncontrolled Lazarus exposure. Not enough to induce clinically detectable effects, but enough that Gotham has a freakish number of madmen.
This also shows just how misguided Ra's is; for all his talk, he fails to realize that the real cause of Gotham's problems could very well be the Lazarus pit itself.
So, all of those people Batman is hitting in the throat with metal car doors have had low-level Lazarus exposure for years. No wonder they somehow manage to survive.
It also explains how Batman can do all the physical feats we see him do his exposure's practically turned him into Captain America.
Penguin's rather lame Cockney accent is actually rather brilliant when you think about it. He's an American native, but his wealthy family shipped him overseas for schooling. Due to a fair amount of teasing due to his "homely appearance", Oswald would often skip class to run around on the streets of London with other delinquents and thieves. Now, would East End thugs really be seen dead with some kid with a snooty American accent? Not likely. It's rather easy to see why he might try (and fail) to affect some sort of English accent.
You know the cutscenes before and after Batman fights Joker in the steel mill? The ones where he's sick in the mirror, but turns around and he's well again? There's no mirror there. The window visible above the "sick" Joker, on the far side of the "mirror", has several broken panes. The one visible during the cutscene after the fight, at the other end of the room, is both unbroken, and should have several objects, including the roller coasters, in front of it if Joker had really been looking into a "mirror".
In the fight scene where you fight the Joker and his crew, no matter how often you whale into him the Joker just keeps getting back up. It's often established that the Joker, while formidable in a fight, is usually by himself no match for Batman at all, so how come he keeps taking so much punishment? It's more foreshadowing that the 'Joker' you're fighting is actually Clayface, who can withstand Batman's attacks much better than the Joker. If the player turns on the Detective Mode during that fight Joker will have no visible skeleton, indicating that it's a Clayface. A player can do the same in Arkham Asylum near Clayface's cell.
After the Joker fight in the Steel Mill why doesn't he just kill Batman despite the offer of immortality? It might be because the offer was too good to pass up, or because he needed the cure, but there's a much better explanation. Joker was really Clayface. Joker operates by The Only One Allowed to Defeat You. Clayface took Talia's offer as his way out of revealing the charade.
In the final approach to the Monarch Theatre, the Joker keeps taunting you with references to watching films. On one hand, this is because the Joker is holed in up in a movie theatre. On the other, it's because the 'Joker' is actually Clayface, who was formerly a movie actor; either Clayface is subtly cluing you in on who he really is or he's letting his act slip a bit by focusing too much on the movie references where the real Joker might vary it up a bit.
When you approach the Monarch Theatre, you see on the sign outside (and the screen inside) that the movie playing is "The Terror", which was the film that Basil Karlo a.k.a. Clayface starred in.
Just before the final battle, Clayface explains his motive for working with the Joker was "the role of a lifetime." Basil Karlo, Clayface's alter-ego, had a serial killer as his most famous and prized role. Now he gets to play arguably Gotham's worst. Alternately, the Joker is the only comic-book character to ever earn his actoran Oscar.
Maxie Zeus's Olympus club is partially submerged, its owner missing, and yet it is still completely lit up. How? Maxie Zeus is obsessed with electricity - the place probably has automatic backup generators capable of lighting it up for years at a time.
In the intro of the game, Hugo Strange gloats about how no one is untouchable. At the end of the game, he claims that he is untouchable. Batman proves him wrong.
There is a brilliant (albeit possibly unintentional) piece of foreshadowing to Ra's al Ghul's appearance in this game in Arkham Asylum: The riddle that involves Ra's' corpse reads "It'll be a cold day in hell when this Ghul rises again". Arkham City takes place on a cold winter's night in Arkham City (the metaphorical "hell"). During this night, an ill and weakened Ra's al Ghul replenishes himself by bathing in a Lazarus Pit, returning to full strength and "rising again", as it were. Therefore, the Ghul really did rise again on a cold day in hell. Alternatively, it could be referring to how Ra's' body disappeared after his fall from Wonder Tower, presumably claimed by the League of Assassins to again resurrect him, which would be a far more literal "rising", and a hint at Ra's returning for a third game. The "Arkham City as hell" metaphor is helped along by Azrael's claim that Batman would be "the warrior who will close the gates of hell". By defeating the Strange's plot, Batman started the process of Arkham City being closed down (the loading screens after beating the game and side-missions state that Arkham City is ready for shutdown), essentially "closing the gates of hell". Which, if true, adds credence to Azrael's claims of prophecy, and suddenly makes his claim of a fire rising from the ashes of Arkham that will burn Gotham, and Batman as well seem a lot more plausible.
Deadshot is contracted by Strange to kill both Bruce Wayne and Batman, in that order, at the end of a list of targets. Strange knows that Bruce is Batman, so if Deadshot took out Bruce, he'd never find Batman, certainly not on his timetable. On the other hand, if Bruce is running around as Batman, Deadshot won't find Bruce in time to kill him. That's why those two are last, Strange thinks of Deadshot as one more criminal to dispose of. He wanted Deadshot to finish off the political prisoners, then be unable to finish his task, and then get killed in Protocol Ten as he fruitlessly hunts either the Batman or Wayne. The whole contract was a setup to get the "world's deadliest assassin" to enter his deathtrap prison voluntarily.
Another bit of brilliance related to this is the criminal that tells Bruce Wayne that he's "on his list". That's actually Deadshot, which only the most astute of players would have connected at the time.
How does the Riddler get his trophies on Wonder City, Wonder Tower, and many other places that are supposed to be secret? Strange is letting him do what he pleases, since it will be more trouble for Bats.
On top of that, he has many of his men undercover among other gangs. Tasking them with placing trophies and setting up mechanisms explains how he managed to place some of them even in the middle of enemy gangs' territories.
Also, how comes nobody took the trophies before Batman did, considering several lines of dialogues between mooks show that they do see them and it's not a case of Gameplay and Story Segregation? If you try to pick up a trophy meant for Catwoman while playing as Batman, Batman gets an electric shock and a taunt from Nigma, which shows that the trophies are apparently rigged to be picked up by specific people. On the other hand, Catwoman can collect Batman trophies at will. How? Well, she is the world's greatest thief...
Joker's last words are a mirror opposite of his last words in Batman Beyond movie, a death scene also voiced by Mark Hamill.
A thug in the HQR dlc wonders if it was Clayface that Batman carried out, and not the then deceased Joker. This is shot down by another thug, and with good reason. In order for Batman to carry the body from the theater to the entrance, he'd have to walk there. The Riddler rooms show he can't carry someone while gliding, the ending does not have the Batwing this time, and he's nursing a stab wound to the shoulder so no grappling. The path to the main gate is blocked at several points by cars and vans, which are there even in the post game, to say nothing of other Joker thugs in the vicinity given the circumstances. Batman would have to walk through all that while carrying the body. If that was Clayface, he'd have more than enough time and opportunities to attack Batman. Also, from Arkham Asylum to that point in Arkham City Joker had fooled Batman about three times with the "fake Joker gag." If you notice, before Joker catches and injects him with his blood, Batman is Genre Savvy enough to immediately scan the body to make sure that Joker's truly dead. After Joker's apparent final death, and everything the clown's put him through, you can bet Batman would make sure that it's really him, and not another body double.
In his trailer, the Riddler challenges Batman, telling him that he will fail: for that, he uses the words "lie blabbering like an ignorant child on the floor". Now, looking at his background, don't those words get some deeper meaning?
Whenever Batman solves one of the Riddler rooms that the Riddler thought unsolvable, his immediate response is to angrily say that he must have cheated. (Turning into his father, poor guy.) But after you've solved the fourth (possibly fifth?) room, the Riddler sounds desperate as he says this wasn't supposed to happen, and "just give him a few more days". It seems strange that he'd sound so worried, so eager to prove something — but then you realize he's all about proving himself, and his denial until he manages to do so. Whenever Batman solves one of his rooms he accuses him of cheating to avoid having to face the fact that Batman may just be smarter than him. He's quick to remind Batman that just because he's won this battle, or this war, he hasn't actually won. Even when the cheating is true, it's because he makes riddles deliberately unsolvable, which makes cheating the only possible solution. Trying to taunt Batman and convince him he's lesser than him while simultaneously scrambling to come up with something so hard he'll never solve it — seeking power and affirmation at the same time...he may be insufferable, but that kid's got issues.
The Joker's "So, how do you keep a secret from the world's greatest detective? Well, do you know? It's easy! You stick it right in front of him, right under his long, pointy nose... and wait!" - Yes, it's foreshadowingthe Clayface reveal at the end of the game, but think about it - What did Joker do in Arkham Asylum? He went & stuck a TV on his head, before pretending to be a mannequin in the Visiting Room for the majority of the game. He's outright mocking Batman for falling for it once, and then not seeing through it again!
The removal of the throw move from Arkham Asylum seems odd at first since you get to keep most of the gadgets from the original game out the gate, but it makes sense when taking into account the invisible walls set up to keep thugs from flying off into freezing waters or from clearly lethal heights during fights. Batman is limiting himself on purpose in order to ensure he doesn't kill anyone by throwing them to their deaths.
The Riddler challenges, especially as Catwoman, he says the same game over lines again and again, you can't skip past them and he just won't shut up. It friggin pisses you off, but that's the point. Riddler is a massive Troll even more than The Joker and Harley. He'd be deliberately annoying just for shits and giggles.
At the beginning of the game, Bruce Wayne is knocked out and kidnapped. He then wakes up in a dark room with a villain taunting him. Now, remind me again what the game over screens are?
Joker's lack of skeleton isn't the only hint in that fight that he's really Clayface in disguise. Compare how well Joker does in a fight in his DLC combat challenge maps in "Asylum" to how poorly he did against Batman in "City".
Also a subtle one in-game once Clayface begins assuming Joker's "healthy/not sick" identity, he rarely calls Batman by his usual affectionate nicknames "Bats", "Batsy", etc. He might every once in a while, but he usually calls him straight-up "Batman". For Joker, this is unusual.
Another subtle one: When you re-enter the Steel Mill to recover the cure, a recording from Clayface!Joker plays on the TV. At one point, the camera shakes and you hear a soft cough, indicating that the real, still very sick Joker is behind the camera.
A small one, but during the Hush side quest, Thomas Elliot mentions in his journal that looking in the mirror, he feels the same way he imagined Leonardo DaVinci felt when he completed the Mona Lisa. Plenty of people know this, but Leo never considered the painting finished, even to his dying day. A bit of a genius bonus considering Hush isn't nearly as intelligent as he would have us believe despite his medical proficiency, which is also a reference to the Batman story he's most famous for being the main antagonist of.
Catwoman can access the same Waynetech grid that Batman can, even seeing Riddler challenges, even though she's not working with Batman. While it's possible she stole some Waynetech that lets her do this, it's also possible that Batman gave her the equipment to help her survive Arkham City.
The mask Mad Hatter puts on Batman resembles the Jabberwock; a monster from the novel "Through the Looking-Glass, and What Alice Found There" by Lewis Carroll - the sequel to "Alice in Wonderland".
It's previously been shown that Harley Quinn has a much better chance of reforming after the Joker dies. He's dead by the end of the game...but she's carrying his baby, and it definitely sounds like she's on the verge of a breakdown while singing to it. It's a common tactic for abusers to get their victims pregnant so that they stay in the relationship. Did the Joker do this on purpose so that she'd be trapped by Mad Love, even after he died? It's also shown that when one of the people she is devoted to isn't taking her in she just goes to the other, she is probably just going to become obsessively devoted to the next person who is nice to her, or Ivy. Which in turn makes it even more horrific, as you realize that Harley now suffers from a Co-dependency disorder, unable to function without someone telling her what to do, which also derives from abusive relationships.
Here's a worse one. Remember during the start of the game, Harley attacked Batman in the game and if you counter it, he tossed her on the floor? Pretty good shoutout to the last game huh? Now do it again knowing that she's carrying a baby. This also applies to Batman tossing her aside during the "fake Joker gag" scene, and whatever it was that Talia did that led to her being Bound and Gagged.
It's possible that all the negative pregnancy tests littering the floor in "Harley Quinn's Revenge" might not have been the result of a false positive, but rather the result of a subsequent miscarriage with all the throwing Harley around aforementioned. Given credence in that the negative tests don't appear in the main game, but rather after.
As has been mentioned other places, there are no women in the city except named characters and some medical personnel. Maybe there are some and considering the comments some of the men make about what they would do with a woman...
Hugo Strange and the Joker are dead. Arkham City will certainly be shut down, but there's still extensive damage to both Arkham Asylum and Blackgate. The TYGER mercenaries are now jobless in a Gotham where a huge power vacuum will exist because of the Joker's death. Those same TYGER mercenaries indirectly led to the weakening and marginalization of the GCPD. If things were bad in Arkham, it will be nothing compared to the hell that's going to break out in Gotham City with thousands of angry former inmates looking to release their pent-up fury on the rest of the city, fighting to fill Joker's hole in the traditional power set-up, and well-trained mercenaries stuck in Gotham who will have no other way to fill their coffers than likely offering their services to the highest bidder or going into the business themselves (a la the notorious Zetas cartel in Mexico). Poison Ivy, Scarecrow, Killer Croc, Hush, Calendar Man, Mad Hatter, Two-Face, and eventually Bane remain at large, and Harley Quinn, pregnant and all, is almost certainly going to be even more dangerous and unpredictable than ever before while battling to keep herself and the Joker's gang in the mix. Though Two Face is still around, so at least there is someone to take over the criminal world and bring a semblance of order.
In Batman: Arkham City, Batman does not kill. All well and good, until you realize that in fight scenes, he's snapping arms, legs, ankles, and possibly backs and just leaving the thugs he mutilates in a Darwinist anarchistic society with multiple serial killers running around (one of them Zsasz, who is an independent player and allied to no one). He may not kill, but a snapped neck might be a mercy compared to being vulnerable in Arkham City... It's also possible that while thugs that just got a broken arm or leg got off easy, the guys with broken backs or snapped arms got mercy killed off-screen because the prison just doesn't have the means to treat those kinds of wounds.
It is currently winter in Arkham City, and temperatures are around the freezing point. A person moderately clothed will have little problems with even extended exposure to the elements, but when they are wearing nothing but sleeveless prison uniforms and are laying unconscious on the cold, wet pavement, it would not take long for hypothermia or exposure to set in... Although Penguin's thugs are probably fine, since they are the only ones actually wearing any form of insulated clothing.
Following the end of the Identity Thief subplot, it's revealed that Hush has managed to give himself Bruce Wayne's face by stealing facial tissue from at least six Arkham inmates, and he's a good enough impersonator to be voiced by Kevin Conroy. Now, after this revelation Hush does a runner and Batman promises to hunt him down and bring him to justice before he can start framing Bruce Wayne; trouble is, he's already started: Hush was seen by dozens of people while collecting the faces, and they bought the half-finished disguise hook line and sinker. True, these people are Arkham inmates and not likely to be believed, but at least one of them was a political prisoner- ie, somebody who might have quite a bit to say to the media once it's revealed just how many innocent people went to Arkham.
Here's a new one about Clayface as well as Talia. People have noticed that Talia's body goes missing for the final fight. However, we never saw just where Clayface was putting his feet when he was getting up. Given that the Arkham Clayface can absorb flesh, it's possible that he stepped on and absorbed Taila's corpse.
Here's one: Recall what Titan did to Joker, the fact that we don't see any of the thugs that took Titan in the last game, and that one of the Arkham Stories states that Ivy nearly died from Titan as well. While it's a good bet what happened to the thugs, remember that this was meant to be used on the supervillians as part of their treatments in Arkham Asylum. If Titan was somehow used on them as intended, they would've died. In fact, given what Sharp was like then, he may have dosed them all anyway and locked them into a room just to fight each other to death.
Zsasz's sidequest: he begins by saying that he has three people that he's holding hostage. When he tells his story, Batman tells him that he should've avoided becoming a nihilistic serial killer. He responds with a noticeable amount of anger in his voice, and abruptly stops. When you finally get to his lair and save the hostages, there are only two. This implies that Batman was indirectly responsible for one of the hostages' deaths. It's made even worse if you look around the area. You can find said victim floating around in the water.
In Harley Quinn's Revenge, notice how Harley is supposedly not pregnant anymore. The false positive boxes aside, think about the physicality of what Harley went through. Considering she and Joker probably had sex before Arkham City, she ended up attacked by Batman (the opening counter scene), and Talia (luckily she was spared and gagged). Who's to say that she would end up getting a miscarriage because of what she's gone through? More horror inducing when you realize that Batman — someone who despite appearances would not kill anyone — indirectly ended a kid's life (granted s/he would probably cause trouble when s/he's older).
Play through, Harley Quinn's Revenge, and pay real close attention to Batman's behaviour. His fragile mental state appears to have been snapped. First off, when interrogating the third informant, he says 'nighty night' in the creepiest voice. Then, he fails to comment on the 'You're next, B-man!' poster, which he would have done under normal circumstances. Also, his normally stoic tone appears to go downright angry at some points, eg. "We're done here", "I'm running out of time", "I'll handle the bombs".
Smaller than some examples, but during the "Heart of Ice" mission, Batman leaves a warehouse full of unconscious mooks. It depends on the timing of the player, but if you immediately report back to Mr. Freeze and then let him get Nora, you can go back and find him there with all of the henchmen gone. It hasn't been enough time for them to wake up at that point. What do you want to bet that he just tossed all of them in the water to drown?
A small yet surprisingly chilling example is one of Batman's Game Over screens featuring Harley Quinn. As opposed to her usual kiddish insults she asks "If you're dead who's going to save poor Mister J?". At the end of the game Joker dies regardless thanks to his own selfishness and carelessness which results in Batman dropping the remaining antidote he was going to give Joker regardless of everything. This game over screen pretty much reveals that Harley despite baiting and attacking Batman, was probably just acting out of her usual madness and secretly fully counted on him to save Joker from his sickness. Post-Game, you're treated to a new game-over screen featuring Harley-Quinn that confirms all this. She says (in a noticeably frustrated and saddened tone) " You were supposed to save Mister J, Bat-Brain. In essence, Batman unintentionally and unwittingly crushed Harley's hopes of Joker making a full recovery.
After the events of the game, do the Tyger mooks have anybody who doesn't want their blood, on any side of the law? Even the deal-makers like Penguin would sooner watch them die than anything else.