"I bring Darth Vader's enemies to justice, and now so do you."
A LucasArtsStar Wars-based multimedia project, like Shadows of the Empire eleven years before it. Covers a wide range of mediums including Comic Books, a novel (by Sean Williams), action figures and a Role-Playing Game, but the Video Game has received most of the attention. It's something of a Tech Demo Game, with a great deal of pre-release hype surrounding its use of Digital Molecular Matter (a physics engine that makes environmental destruction, such as bending metal and tearing plant matter, much more detailed than anything seen before) and Euphoria AI coding (which determines enemy behavior in a much more realistic fashion — stormtroopers grabbing hold of each other or the environment when lifted by the Force, for example), though the game's inconsistent use of both these elements drew criticism in addition to the elements noted below.The basic story of TFU centers around Darth Vader's secret Sith apprentice, born Galen Marek but codenamed "Starkiller", and explores his role in the Star Wars universe. Set during the time period between Revenge of the Sith and A New Hope, he ends up interacting with various canon characters and fills in new details.Reviews for the game were mixed, with most complaints being a tricky targeting system for flinging objects around and that some of the large creatures were defeated using the exact same methods. Surprisingly the story has been given significant praise, which is unusual for a Star Wars original video game (they are usually an Excuse Plot with some fun action and characters).A Downloadable Content pack entitled the Ultimate Sith Edition adds a What If? story based on the Dark Side ending, that allows the player to screw around with the canon, with Starkiller proceeding to hunt down and destroy characters such as Obi-Wan Kenobi and Luke Skywalker.A sequel has been released that continues the exploits of Starkiller. Concerning his death in the first game, this character is supposedly a clone. But the game's story revolves around him trying to learn the truth.That Other Wiki has more information. The other other wikimight help too.
All There in the Manual: The real name of your character. While the game refers to him mainly as "Starkiller", the companion novel, towards the end, gives his name as Galen Marek.
The Dark Apprentice from the sequel's Dark Side ending. At no point is he even hinted at during the main storyline, his only appearance coming if the player chooses to kill Vader instead of arrest him. His origin is explained in a series of videos that the player can unlock by completing several challenges.
All Your Powers Combined: PROXY has the ability to use a hologram to transform into any Jedi he knows of, and is able to copy their lightsaber skills and even their Force powers.
Always a Bigger Fish/Bait-and-Switch Boss: In the boss fight on Cato Neimoidia in the sequel. It looks like the clone Starkiller is about to face off against a Rancor - and then an even larger arm reaches out, grabs the Rancor and pulls it into a darkened opening. Out of that opening comes the real boss, the Gorog.
Ain't Too Proud to Beg: In the second game, Galen does a Type 2 to Vader when the latter threatens to kill Juno.
Arrogant Kung-Fu Guy: If you disarm Maris Brood during one of the quick-time events during the boss fight, Galen will casually toss her lightsabers back to her. Whilst she's defenseless face down in the dirt.
Artificial Brilliance: Suddenly comes out against the last boss. He adapts to your tactics and punishes any weakness in your style. And if you try to be cheap and and spam him, he'll spam you right back. Of course, since it's Darth Vader if the game gave you any less, people would complain.
Which leads to some (possibly unintentional) Fridge Brilliance: the best way to take him is to act as aggressively as possible, which is a very Dark Side way of fighting (see Luke's final fight with Vader, for example). Another way is to simply duel him, without relying too much on Force spam or buffs (see, well just about any duel in the movies).
Even more brilliant when you consider that the best way to tackle the other final boss is to deflect Palpatine's attacks back at him; a more defensive (and therefore Light Side) way of fighting.
Technically, the second time he's still dead. He just got cloned. The novel hints that it may have been the case first time as well.
Who is essentially a continuation of the Starkiller before and there's really no difference between them.
Badass Grandpa / Handicapped Badass: General Kota. He's blind, but can actually in some respects see better as he is used to sensing his environment with the Force, which basically gives him a mental picture of his surroundings, much like sight-only he can see through darkness, fog, smoke, etc.
Bag of Spilling: Either averted or justified in the second game. It's averted if the player character is a clone, and therefore has yet to develop all of the original Starkiller's powers, and justified if the player is the original returned, and therefore still recovering from his death.
Berserk Button: For Starkiller, it's Juno. Not even The Force will help you if you harm her in Starkiller's presence, something Darth Vader finds out when it appears he's killed Juno at the end of the second game. You do not screw with Love Interests/family members of Star Wars characters. You end up getting squished like a bug, God-like powers or not.
Blind Seer: Rahm Kota, who becomes this after he loses his vision in a lightsaber battle
Boarding Pod: The companion comics for the sequel provide the page picture. During a battle near the Itani Nebula an unidentified TIE variant launches boarding torpedoes carrying Terror Troopers at the Rebel frigate Salvation.
Bonus Boss: The climax of the Jedi Temple missionnote Included in the Wii version, optional DLC for the PS3, Xbox 360, and PC versions is a duel with an evil hallucination of the Dark Side version of Starkiller
Broad Strokes: While not exactly with a Literary Agent Hypothesis to justify it, but the crazy uses of the Force can easily be used in this way. And accounting for the fact that despite how powerful Galen is, Vader and Palpatine still seem to be more powerful.
Bulletproof Human Shield: Appears in the sequel during the "Battle of Endor" DLC level. Starkiller uses Chewbacca as a shield against Han Solo's blaster.
The Cameo: Jar Jar Binks, who shows up frozen in carbonite in the Kashyyyk level. In addition, R2-D2 shows up in the background in a few cutscenes and the last hologram PROXY uses during his duel with Galen? Darth Maul.
There are loads of film and video game characters available as costumes, from Kit Fisto to Darth Sion to Obi-Wan Kenobi.
Yoda and Boba Fett make brief appearances in the second game, with Wedge Antilles making a cameo in the novelization.
Canon Discontinuity: In December 2013, Pablo Hidalgo made a statement via twitter, that declared the game's depiction of the forming of the Rebel Alliance non-canon. This is apparently part of Disney's new canon-policy, that's currently being worked-on by a team that includes Hidalgo, Leland Chee, and Dave Filoni amongst others.
Cutscene Incompetence: Although you reduce Palpatine's lifebar to zero in the final battle, this does not prevent him from killing Galen in about ten seconds in the cutscene. It's possibly justified by the fact that Palpatine is a very powerful Sith Lord. It'd just be stupid for you to actually kill him. Not to mention that as a canonical prequel (for the Light Side ending, like every Star Wars game) neither Vader nor Palpatine could die. The lifebar is just a gameplay mechanic. Also, this would not be the first time that Palpatine feigned weakness during a fight as a means of lowering his opponent's guard.
Darker and Edgier: The creators claim this for the story of the sequel with it being more personal for Starkiller. Turned out to be ironic since the sequel has a far happier ending than the first game. Though that's not to say that it didn't have some pretty dark moments.
Though they only have one year in-story for Vader to escape custody, Leia to be chased down, and Starkiller, Juno, and Kota to mysteriously disappear, so III will more than make up for it - if there is a III.
Death World: Felucia. Not only is it infested with rancors, some of which the hostile natives ride on top of, and has the largest sarlacc specimen in the galaxy, even the plants are out for your blood. Those that don't try to kill you directly by spitting venom at you at least explode violently if you so much as brush lightly against them.
Determinator: If Vader took Juno to the gates of Hell, Starkiller would be right behind him.
Development Gag: "Starkiller" was going to be Luke's surname in the prototypical Star Wars.
You can get a bonus by freezing a number of storm troopers in carbonite, either throwing them into tanks, throwing the tanks at them or ripping off a pipeline and spraying them with it. In the sequel, there's even an achievement for it.
DLC: In the original, Tatooine and Hoth. The Jedi Temple is available as DLC as well, though it's already included in the Wii version.
Preordering the second game from Gamestop gave players Maulkiller costume, as well as silver lightsaber crystals. An Endor mission is available for purchase for II as well.
Doomed by Canon: Anyone who appears in the original trilogy has to survive, and, well, one would think an insanely powerful rogue Jedi/Sith would have been mentioned if he was still in the picture, wouldn't you?
He's still alive for there to be a sequel. Course he has to die one way or another in the end, though this being Star Wars, it's possible he's put on-ice or did die and someone brought him back via cloning. Word of God says that the plot of II will deal with finding out exactly who you are.
Turns out, Starkiller doesn't find out who he really is, though he will probably find out if there is a III, since Vader is captured by the Rebel Alliance. It seems likely that original Starkiller was Only Mostly Dead, since apparently cloning Force-Sensitivity results in psychosis, insanity and suicidal tendencies-and who wants an enraged Starkiller running around screwing up all your stuff?
Downer Ending: One choice you can make will unlock the non-canon dark side ending. Oh, boy, is it a Downer Ending — Everybody gets dead or screwed over. And the Sith Edition expands on it with new levels.
Well, I've got good news and bad news. Good news: Luke doesn't die and his friends escape Galen. Bad news: Luke succumbs to the dark side and becomes Galen's apprentice. Oh yeah, Obi-Wan's dead and the Rebellion is pretty much screwed, but hey! At least they blew up the Death Star.
Easter Egg: Numerous. Two occur on the Raxus Prime levels in the first game. First time there, one thing you can pull out of the yellow toxic sludge is Luke's starfighter, a la Dagobah style. The second time you're there, you can spot a piece of junk in the wall - specifically, the front half of the Millenium Falcon.
Pressing the Lightning button while playing as Vader in the first level performs the classic Force Choke.
Elite Mooks: Besides regular Stormtroopers, you fight a variety of elite special troopers, including flying, flamethrower-equipped Jumptroopers, black-armored Shadowtroopers with cloaking devices, and the Imperial Royal Guards.
Escort Mission: Not as frustrating as others, though, as your ward is a goddamn Jedi! He's not invincible, but he has such a huge amount of health that basically the only way for him to die is to intentionally kill him.
Evil Knockoff: The dark apprentice at the end of the second game.
Eye Scream: A lot in the first game - for starters, General Kota, with his own lighsaber. Ouch. The final cinematic in the Dark Side ending has some of this in 1st person view. The Stalker model also has a small droplet of blood leaking from the visor, hinting at some nastiness underneath, which is in some ways even more disturbing than the previous instance. The finishing move for some Rancors invokes this as well
Faux Affably Evil: Proxy, due to his programming, becomes a hybrid of C-3P0 and HK-47. Though given that he sacrifices himself for Starkiller in the end and there were signs of genuine fondness for Galen (later Juno) mentioned in the novel, PROXY wasn't Faux Affably Evil through and through. The only reason he does qualify is that he really does try to kill Starkiller every time they duel (though it's justified as it's meant to keep Starkiller's combat skills sharp).
Shaak Ti's warning that the Sith betray one another. It's already shown that Vader is not actually training his apprentice to stage a coup. Then, Vader betrays his apprentice. Twice.
There's also Kota's warning to Starkiller that fighting the Empire is pointless and he'll eventually be killed or worse. He's exactly right, the two endings are a Heroic Sacrifice and a Fate Worse than Death.
Fate Worse than Death: The Dark Side ending in the first game has Starkiller enslaved by the Emperor and being transformed into a cybernetic monstrosity very much like Vader.
Gatling Good: The Militia Elites in the first level and the Rodian Heavy Defenders in the second and eighth levels.
Gambit Roulette: Going by the graphic novel, Galen's entire path to the Dark Side (being kidnapped as a child and taken to be raised/tortured for life by Vader, having Vader betray him, pretty much everything except maybe actually siding with the rebels) was one by the Emperor in order to take someone more powerful than Vader and shape him to be Vader's replacement.
Genre Savvy: The novelization of the second game makes a point that while Starkiller's purpose is still to Always Save the Girl no matter what, he is careful to avoid falling onto The Dark Side, as Juno most likely would not want to be with the monster he would become on it.
Good Costume Switch: The novel mentions that Starkiller starts wearing robes more like those of the Jedi in order to be more presentable to the Rebel leaders, who all remember the Jedi as the good guys of times past. His outfits are a bit more ambiguous in the game, where his last outfit is a gray and black robe.
The "Ceremonial Jedi Robes" unlocked after getting the (canonical) 'good' ending.
These make a comeback in the sequel.
Groin Attack: The X+A/Square+X grapple in the sequel has Galen stabbing many enemies here. It may look like the stomach at first, but the blade's going through that poor stormtrooper's codpiece.
Heroic Sacrifice: In the canonical light-side ending, Galen sacrifices himself to buy time for the senators to escape from the Emperor - and, as Vader and the Emperor note, in doing so, he's become a martyr for the Rebel Alliance that will ultimately be their undoing. Also, PROXY.
The second one might not be the case. In the non-canon Ultimate Sith campaign, you find his remnants in the basements of Jabba's Palace, where he is being reconstructed to be used by the Hutt for his own malicious purposes.
He's Back: When Galen and the Rebel founders arrive at Corellia to sign the Declaration of Rebellion, General Kota suddenly shows up, having shed his blindfold, and dressed in full Jedi General regalia. A bewildered Galen says, "I thought you were passed-out in the cargo hold," to which he responds, "I finally came to!"
You can say the same thing about Galen in the sequel given that he died in the last game.
Hitler's Time Travel Exemption Act: In the new alternate storyline, it is revealed that if you kill the Rebel Alliance's founding leaders, the Alliance is formed anyway, presumably by the escaped Leia. Given that the other members were all known and had to go underground or were under careful watch by the empire this is probably not that far from what happened in the lightside ending either.
Hoist by His Own Petard: Vader's plans for Starkiller end up this way. In the sequel, Starkiller can turn enemy attacks against them.
Ozzik Sturn, the general on Kashyyyk, also mentions that he'd like to hunt Jedi before attacking Galen in a custom AT-ST. Galen responds by ripping one of the guns off the AT-ST and clubbing the walker with it. Did we mention the gun's bigger than him?
I Lied: After Starkiller gathers the leaders of the soon-to-be Rebel Alliance in an attempt to distract the Emperor long enough for him and Vader to stage a coup, Vader himself crashes the party and tells his "apprentice" that the whole plan was a ploy to get all the rebels in one place and capture them in one swoop.
Starkiller: "You agreed to stay away!"
Vader: "I lied, as I have from the very beginning."
Happens again in the sequel's Dark Side ending.
Vader: I lied when I said the cloning process was not yet perfected.
Improvised Weapon: Well, basically anything, really, thanks to the Force and physics engine, but in the Hoth level of the Ultimate Sith Edition, you can rip the blaster cannons off of X-wings - and shoot them by zapping them with lightning.
In the Hood: Several of Starkiller's outfits, most notably the "Jedi Adventure Robe" which he wears at the end.
Ink-Suit Actor: Starkiller, Juno Eclipse, Rahm Kota, and Maris Brood all look very much like their voice actors, as LucasArts used facial recognition technology to incorporate the likeness of the actors into the game. Bail Organa was also voiced by Jimmy Smitts, but he was in the live action movies anyway.
Large Ham: Emperor Palpatine, and Kota in the second game.
Made stranger when you learn that the Emperor is voiced by Sam Witwer, aka Starkiller. He does an amazing impression of Ian McDiarmid.
Leave No Witnesses: "The Emperor must not discover your presence. Kill everyone aboard..."
Loads and Loads of Loading: The first game. The PS2 version is notoriously bad about it - the gameplay itself runs smoothly enough, but going through the menus during the rest period between stages quickly becomes a hassle. Scrolling through the various custom outfits can take between 10-20 seconds per shift, with close to a dozen possible outfits to choose from and no way to skip to the one you want.
Kick the Dog: Or drop kick an Ewok in the sequel's Endor DLC level.
Left Hanging: Canonically, the second game ends you spare Vader's life and take him prisoner, but as the rebels jump to Hyperspace, Boba Fett's Slave 1 takes off behind you. Unfortunately, the poor sales of the sequel, combined with LucasArts closing three years later (after Disney bought Lucasfilm, the parent company), suggests that it's not going to be resolved anytime soon (unless of course Electronic Arts does something about it).
Loners Are Freaks: Kazdan Paratus. Being isolated on a junkyard planet led him to constructing a replica of the Jedi Temple out of scrap, complete with robotic versions of the last Jedi Council. He speaks to said replica Jedi as if they were alive and freaks out when Starkiller/Galen trashes them.
Meteor Move: The most satisfying of Galen's (many) moves in The Force Unleashed is a variation of Type B in which he slashes his opponent multiple times into the air with his lightsaber, grabs him by the throat and then crashes into the ground below, usually sending a resounding shockwave that ripples outward, sending the usually-present crowd of hapless Stormtrooper screaming into the air, setting up for yet-another combo.
Morality Chain: Juno Eclipse was the one clear thought, the one bright spark Galen Marek held on to, even at the end.
Multiple Endings: Like most other Star Wars games, there's Light and Dark Side endings. As with all Star Wars games, the Light Side ending detailed above in Heroic Sacrifice is canon; the Dark Side ending has Galen forced to become Palpatine's new cyborg apprentice, much like what happened to Vader... except Palpatine specifically tells him that he will soon cast him aside. Quite a Downer Ending if there ever was one.
The Ultimate Sith DLC adds an alternate story based on the Dark Side ending, with Starkiller becoming Palpatine's apprentice and proceeding to kill off the heroes of the series.
And the sequel as well. In the Light Side, you spare Vader's life and take him prisoner, but as the rebels jump to Hyperspace, Boba Fett's Slave 1 takes off behind you setting up a Sequel Hook. In the Dark Side, you are about to finish Vader when you're impaled by a lightsaber. It turns out you weren't the first stable clone, and this one is loyal to Vader. He then takes off to hunt down the remaining Rebels. The downloadable Endor mission follows. Oh, and in the Light Side, Juno lives and in the Dark Side she dies.
Mundane Utility: Force Lightning, the black line between the light side and the dark side, makes a great lantern. Better than the lightsaber even.
Ms. Fanservice: Juno Eclipse, who is showing much more cleavage than is probably regulation for Imperial shuttle pilots. Hilariously, when Proxy assumes her form while telling Galen about her, his depiction has her in properly-fastened uniform. This is how you tell them apart until he drops the hologram.
Nice Job Fixing It, Villain: Darth Vader sends Starkiller to create a rebellion by gathering potential leaders to start it, to distract Palpatine for Vader to start a coup. Ultimately, doing so starts Starkiller's path to redemption. Even after Vader kidnaps them and tells him this all just a ploy to capture all of them in one swoop, Starkiller, who is now on the Light Side of the Force, rescues the Rebel leaders, performing a selfless Heroic Sacrifice to stall Palpatine, and the Rebel leaders escape and formally found the Rebel Alliance. Even after he and Palpatine now know who the Rebel leaders are, Vader's plan to exterminate them after capturing them ends up backfiring, thanks to Starkiller.
No-Holds-Barred Beatdown: Meta-Example, as with enough playthroughs (and the powerups you get from New Game+ ) any match of you(the player) vs. any squad of mooks becomes this.
Nubile Savage: Shaak Ti dresses like this. The last 20 years may have been hard for her, but she was a Jedi Master! To be fair though, all those heavy robes probably wouldn't have been very practical in the jungles of Felucia (see Galen's own outfit for the first Felucia level.)
Her padawan, Maris Brood, isn't exactly fully dressed either. At least from the waist up.
Old Save Bonus: Having a save file from the first game on the PS3/360 unlocks Galen's initial outfit and the costumes the player receives upon completing the Light & Dark Side Endings in the first game,
Ominous Walk: To emphasize that you're Darth Vader, you are limited to this in the first level, which also serves as a tutorial level.
Our Giants Are Bigger: Force Unleashed II figures the only way to top a fight with a Rancor is to have Starkiller fight a beast big enough to crush a rancor in its hand.
Person of Mass Destruction: Galen, at least if the video game is any indication. The developers describe him as a "Force wrecking ball".
Ramming Always Works: In the second game, during the Rebel attack on Kamino, you get to ram an evacuated Rebel cruiser into the main Imperial cloning facility / base. Easily one of the coolest moments of the series. And judging by the flash, the cruiser's reactors went up on impact, multipliying the destruction.
Redemption Promotion: Galen is certainly skilled as Vader's apprentice, but he becomes insanely powerful as he grows closer to the good guys.
Resurrected Romance: In the sequel Starkiller's primary motivation for breaking free from Vader's control after being brought back from the dead is to find Juno. It's unclear whether he is a clone or not, but she seems quite willing to accept him back into her life.
Robot Buddy: PROXY. Subverted in that PROXY's standing orders are to kill Galen. Nevertheless, he's quite friendly toward his master/target. And he even tries to save his master from Vader, sacrificing himself in the process.
Note that when he sacrificing himself, the programming that told him to kill Galen were also gone by that point after the smelter's computer core "possessed" PROXY and was destroyed when Starkiller killed the facility. Of course, it's understandable if it's not all that familiar, considering how the Wii version omitted this fact.
RPG Elements: Defeating enemies earns you points you can spend to upgrade your Force powers.
Shout-Out: Like many other Star Wars characters (Coleman Trebor, Dannl Faytoni), Kazdan Paratus' name is a shout-out to a crew member—namely, Lawrence Kasdan, who wrote Empire and Jedi (and Raiders of the Lost Ark).
May not be intentional, but the Kato Neimoidia level introduces a lucrative and lavish casino, and enemies that fire missles, which you can grab and redirect back at them. Very similar to a 2008 sci-fi game called Path of the Furon.
The achievements for beating Boba Fett in the first game's Tattooine DLC is called "And The Quarterback is Toast" - a rare case of a Shout Out to a Shout Out, as the original quote comes from Die Hard.
One of the Rebels in the Wii version shouts that the terror droids are "coming out of the walls!", in a very similar fashion to what some of the characters say about the Xenomorphs from Alien.
During the final battle with Palpatine, Palpatine will say to Starkiller "You will scream just like your father" in such a way that almost echoes what Andross told Fox McCloud in the Easy route of Venom in Star Fox 64.
In the first game, in the Empirical, Starkiller is refered to as "Subject 1138". Similarly, in the sequel, the password Kota gives The Salvation is "Talus Haroon Ten Eleven Thirty-Eight".
Fridge Brilliance comes in when you realize that the above literally comes out to "THX 1138", X being the Roman numeral for "ten".
The first level on the Salvation in the second game has horror elements that are reminiscent of Dead Space. The parallel is furthered with one of the datalogs for that level's enemies, which detail a series of gruesome murders on a ghost ship found floating through space.
Killing Obi-Wan and then his Force Ghost in the Tattooine DLC awards the achievement "No more lies old man", a reference to Obi-Wan's "if you strike me down I will become more powerful than you can possibly imagine" line to Vader in New Hope.
Spotting the Thread- In the first game, Galen has hazel eyes. In the second game, he has brown eyes. Therefore, not only was Galen definitely a clone in the second game, but clones were not perfect, possibly because Vader wanted the clones to be better than the original.
Superpowered Mooks: The Shadow Guard enemies have lightsaber-lances and can perform several of the same Force powers as you. The robotic Purge Troopers also qualify, thanks to their inhuman power and durability. They're immune to some of your Force powers, at higher difficulty levels, they can take a third of your lifebar with a single attack and their moves cannot be interrupted except by Force Lightning (their only weakness amongst direct Force attacks) or throwing objects at them.
Perhaps justified since Boba can already be fought in the first game during the Dark Side Tatooine DLC & the developers couldn't come up with a way to make the two fights different enough to warrant it.
The Unreveal: Is Starkiller a clone in the sequel? Your guess is as good as ours.
Villain Ball: At the end of the second game, Vader has Juno, and his threats to her life have cowed Starkiller into obedience. While Vader is focused on him, Juno escapes, grabs a saber, and makes a clumsy attack that he easily dodges. Rather than disarming and restraining his valuable hostage, he blasts her off the platform. Cue Starkiller's Unstoppable Rage.
Villains Never Lie: In the sequel, Kota calls Starkiller out for thinking this — believing Vader when he told him he was a clone. Though there is a lot of evidence supporting the idea, Vader has lied a lot in the past. And damn never everything he said to Starkiller in particular was a lie in the first game.
Wake-Up Call Boss: General Kota. While not too difficult, he is the first opponent that can resist and use Force powers that Galen (who at this time is considerably weaker than Darth Vader) faces.
We Will Use Manual Labor in the Future: Or in a galaxy far far away that has space ships, upsidedown cities and other modern marvels. Zig Zagged though, in that it depends on who does it. For example, the Empire's ship-building facilities use state-of-the-art automation for building TIE fighters and even the Executor flagship is assembled by an army of construction droids.
Weld The Lock: During your breakout from the Empirical, a cutscene shows a purge trooper welding shut a door through which you have to go. You also have to go through the purge trooper and two EVO troopers.
Wham Line: This exchange, after which the direction of the game (along with Starkiller's life) changes completely.
Starkiller: You have lured the Emperor to us? When do we strike?
Darth Vader: I did not summon him. [ignites his lightsaber through Starkiller's back] His spies followed you here.
What Happened to the Mouse?: Inverted. In the Dark Side ending from the sequel, Starkiller goes to kill Vader... Only to be stabbed by a clone that Vader had rid of Galen's personality, with several unlockable videos explaining the Dark Apprentice's origin & where he came from. At no point is he even hinted at during the Light Side ending, making the supplementary videos entirely pointless if that's the Canon ending, since we get the origin for a character who canonically doesn't even exist within the game that introduced him.
Not quite. Notice that when he reveals himself, he has some kind of invisibility gadget or power? In the DS ending he shows himself because Vader is about to get killed. In the LS ending there's no reason for him to do so, but that doesn't mean he's not there. Invisible. Lurking.
An easter egg cutscene shows that Vader told the Dark Apprentice not to intervene unless absolutely necessary.
What Measure Is a Mook?: Deluges of this trope. The novelization has Juno angrily tell Starkiller that one of the people he just casually massacred was an old friend of hers, but when he apologizes she says it's okay, since she hadn't talked to him in years anyway. Late in the novel Galen - by that point the narration had picked up on his name - is horrified about how Vader's plan involved letting thousands of loyal Imperials get slaughtered, nevermind that he'd done about half of that all by himself, delighting in how easy it was.
"I let you live. You tell me I'm a clone but I chose to spare you. (*beat*) Maybe Kota's right. Maybe this is all a trick —a way to get me so confused... that I'd forget who I really am and become your slave again. But either way... I.Let. You. Live. I've finally broken your hold over me."
You Keep Using That Word: The word "destiny" seemed to be used by Darth Vader a whole hell of a lot but it was never consistent at all. Vader just seemed to use it when he wanted Starkiller to do something.
This is lampshaded a couple times in the novelization for the second game, used to highlight just how insane Darth Vader really is.