These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
One specific example from the game itself occurs at the beginning of the final confrontation. The scene begins with Starkiller charging down a corridor on the Death Star toward the throne room where the rebels are, but suddenly he halts as the door at the end of the hall opens and Darth Vader marches through. Starkiller visibly steels himself for the battle ahead as the two draw their lightsabers and slowly walk towards each other. The main theme blaring in the background makes it a truly epic moment and arguably makes this specific moment◊ the game's Money Making Shot.
Complete Monster: The Emperor seems to get off on watching people suffer and die.
Critical Research Failure: In the sequel, Starkiller flees Kamino in Darth Vader's fighter, the TIE Advanced x1 prototype, which has deflector shields, a low-grade hyperdrive, and no life support system (it's Vader's ship, and being Vader, he always has one on). Although Starkiller does show up in the next level in an Imperial Pilot's uniform. Maybe Vader had a spare for his valet?
Demonic Spiders: Imperial Purge Troopers in the first game and their insanely precise shoulder-mounted homing lasers. Their shots are unblockable, are harder to dodge than anything any boss will throw at you and will easily perform nigh-immediate 180 degree turns to smack you in the event that you do somehow manage to duck under or jump over one of them successfully. Oh, and if the shot hits you, it'll take about 20% off your health and knock you down. If you dared to jump in an attempt to dodge it, the knock back effect will last long enough for him to shoot it at you again, this time without any chance at all for you to avoid it. If you manage to get close to them, however, they're easier to kill, at least if you're fighting them alone. Now imagine, if you will, facing off against four of these guys at a time, each one at a different range. It gets a tad hard to get through something like that.
More literal examples with the Terror Droids in the sequel and the assassins that accompany them. They Teleport Spam so that you can't hit them and have to come up with creative ways to kill them, such as going into Force Fury or blowing out a window or something. They've got attacks that can paralyze you and frequently close in for melee while teleporting away from you when you try to counterattack.
As well as Darth Phobos (especially when she impersonates Juno).
Ensemble Darkhorse: The fanbase seems to absolutely adore Maris Brood even though she was a minor character in the first game. You can even see people claiming for her return in the sequel.
Fake Difficulty / Nintendo Hard / Guide Dang It: All at once! Inexact controls, difficulty with the autotarget mechanism, occasionally-slow-to-react cameras (split seconds count in boss fights), the tutorial level giving the novice player an inflated sense of confidence ("Click lightsaber spam to win!") can make this game more challenging in ways that aren't related to enemies/AI. May count as a Porting Disaster on PC.
Foe Yay: When he defeats her, Maris Brood actually seems to be trying to seduce Galen into sparing her life. Made more explicit◊ in the comic adaptation.
God-Mode Sue: One common criticism leveled at the main character (extending to his clones) is that he is perhaps too powerful. Perhaps personified best in the DLC levels where he performs such feats as... killing Obi-Wan Kenobi's ghost in the Tatooine level, overpowering Chewbacca (someone capable of tearing a human apart) with his bare hands without the use of force abilities on Endor, and then showing that even a fully trained Jedi version of Leia is absolutely no match for him.
Goddamn Bats: In the Wii game, any enemy using a jet pack. They can't be thrown, have an impossible-to-block flamethrower (for close range), encourage you to whack them with your saber (in which case, they blast you with a flamethrower), have tons of hit points, and can attack you while you electrocute them. Luckily, you can quickly kill them by dangling them over a ledge and impaling them.
In the PS3/360 version, you can short out their jetpacks with lightning. Its Goddamn Bats are the Scout Troopers, imperials with sniper rifles that outrange Galen's force powers.
The Lightsaber Training Droids in the Jedi Temple.
When Starkiller is being remade in his armor during the Dark Side ending, as the Emperor is leaving, Starkiller screams, his voice sounding metallic, like his vocal chords have been replaced with grinding metal. It's not implausible to think that they have, either.
Likewise in the Imperial Raxus Prime level in the first game, where Starkiller fights PROXY as Maul. He's fighting himself, from a certain point of view.
The release of the first game was delayed to where it was sandwiched between the premiere of the Star Wars: The Clone Wars feature film and the premiere of Star Wars: The Clone Wars animated series on Cartoon Network. Both TFU and TCW have apprentices to Anakin Skywalker/Darth Vader who wield lightsabers with the reverse-grip.
This also happened with the second game: Starkiller (or rather, a clone of him) uses two lightsabers in the second game, while Ahsoka Tano also wields dual sabers (though the second one is shorter) as of the Season 3 episode "Heroes On Both Sides", which premiered a month after the release of TFU II.
Emperor: You will give me the names of your friends, and your allies... Andthenyouwilldie.
Older Than They Think: The developers spent a lot of time talking about the game's materials system in pre-release interviews like they were the first ones to implement such a thing. They were late by four years, and ironically, one of the criticisms of the game found in many reviews is that the system is ultimately underused to the point of being barely noticable.
Player Punch: In The Force Unleashed II: DLC Edition's Endor mission, the Dark Apprentice (That's the player character) kills Chewie and Han.
Porting Disaster: The company responsible for the PC port did the absolute minimum necessary to have the game run on a computer. The system requirements are ridiculously high, the graphics and controls have to be changed before launching the game (and the graphics options are limited to screen resolution) and the game itself is riddled with bugs and prone to CTDs. Oh, and game data is duplicated for each level, making the full game to take 27 GB of disk space. It's a direct port and nothing more.
The second game did much better, although in that case it was developed alongside other console versions and not just blindly ported.
That One Boss: Kazdan Paratus nearly always blocks all of your moves except Force Lightning, and, if you play on difficulty above normal, starts blocking Force Lightning too, if it's used repeatedly. He has hard to block light-lance attacks and can hit for about 70% of your life if he catches one of the objects lying around in his Force Push.
He's not as bad in the Wii version, though, despite having a double-bladed lightsaber instead of his lightsaber pike. Taking his place however is the ghost/hologram of Galen's father, Kento, who not only blocks every attack you throw at him, but also seems to move and react twice as fast as you.
On higher difficulties like Sith Master, most of the bosses of this game fall under this category, unless you know the "trick" to beating them.
Chalk up the Gorog, whose fight never seems to end.
What about the Terror Walker? While relatively easy to beat one-on-one, it summons so many Terror Droids and Assassins to help that you can't really focus on it, allowing it to keep stepping on you as you take damage everywhere.
That One Level: The hangar in the Death Star (PlayStation 3/Xbox 360 version) isn't called the "Hangar of Death" for nothing. It's filled with snipers, Elite Mooks, and AT-ST's on all sides with you in the middle. However, fans discovered a cheap way past it- Force Repulse the doors you need to get through, and if you fall through, you'll automatically cause the cutscene to begin.
There's also the bit where you pull a Star Destroyer out of orbit—to explain, the "guide" for how to aim the pull is completely off.
Uncanny Valley: The Wii, PS2 and PSP version's character models are unable to produce any emotion whatsoever.
What an Idiot: Darth Phobos dropping her Juno disguise in the middle of the battle.
Starkiller's entire life qualifies, but most definitely the scene in the sequel where he starts hallucinating that Juno and Kota are rejecting him.
Juno's voice: Who are you? Starkiller: Juno, it's me! Juno's voice: You're a monster, a thing. Starkilller: (sounding like he's about to cry) Juno, please! Kota's voice: You're Vader's puppet. Just a body filled with the memories of a dead man.
Kazdan Paratus. Wracked with guilt for fleeing the Jedi Temple went it was attacked, he made statues of the Jedi Council members, who he talks to as if they were alive. He's devastated when Starkiller destroys them.