The original version of "Escape from Umbrella's Laboratory" was already a great theme on its own. The remixed version for this game more than lives up to the original.
Badass Decay: Hearing Jack Krauser's internal monologue makes him sound whinier and more cowardly than he normally seems. Considering he's suffering a mental breakdown at the same time his raging inferiority complex decided to flare up, it was to be expected. To his credit, from Leon S. Kennedy's perspective he never actually loses his composure.
Complete Monster: Alexia Ashford no longer had love for her brother as a part of her personality, the way it was in Code: Veronica, and her evil is cranked up a few notches higher. A Child Prodigy who joined the Umbrella Corporation at the age of twelve, Alexia was also an entitled sadist with a serious god complex. She aided her brother in murdering and experimenting on their father, tortured a classmate to death (and recorded the session) for being almost as smart as she was, and eventually injected herself with the T-Veronica virus, which she planned to use to Ascend to a Higher Plane of Existence. Reawakened from cryogenic sleep in her twenties, Alexia kills her brother for not waking her up on time, transforms Claire Redfield's Love Interest, Steve Burnside, into a monster and forces him to fight her to the death, and tries repeatedly to kill Chris and Claire for no other reason then their presence at her facility. She reveals that her plan is to infect the world with the T-Veronica virus, enslaving most of humanity to her will. When asked why, Alexia just gloats about how, as a superior specimen of humanity, she deserves to be Queen.
Krauser, of course. He was so popular back in Resident Evil 4 that one of the main storylines in this game focuses on his descent into darkness. The fact that he was one of the development team's favorite character was also a big contributing factor to the decision as well.
Manuela has built up a growing fanbase of her own. Though sadly, she may never appear in another game despite the game's canon ending saying she survives and is taken into U.S. government custody. However, her return is not completely out of the question. She has a wonderful singing voice which fans are very fond of. To top it off, she managed to accomplish what Alexia could not in her life-long mission: become one with the T-Veronica virus.
Even Better Sequel: Whilst The Umbrella Chronicles is good on its own merits, and adds more depth for AlbertWesker, The Darkside Chronicles has improved graphics, widens the range of headshots, except on Hard and Very Hard difficulty to add to the experience, remasters and remixes some of the most beloved music pieces in the series, has a well developed, original story with a more complex villain inJavierHidalgo, a good supporting character in Manuela Hidalgo, and the settings revolves around Resident Evil 2 and Code: Veronica; the former is one of the most beloved games in the series, while the latter is a cult favorite amongst fans.
Game Breaker: Having a second person playing turns the game into a joke as the enemies increase in neither volume nor toughness to compensate for the fact that they are being shredded by twice as much lead. Note that this only applies to Normal mode and lower difficulties. If the player don't have anyone to play with, they can always go Guns Akimbo. It just takes a while to get good at aiming with their other hand.
Annette Birkin of Resident Evil 2 fame also was hit by this, as her brief depiction in this game is a lot nicer and more sympathetic/tragic. She seems to be much more of a mother in this game than she was in the original, showing far more concern for Sherry and far less of an obsession with William's G-Virus. She even takes it upon herself to stop her mutated husband as opposed to fangirling over his work in spite it being a major contributing factor in the Raccoon City Incident.
Not completely rescued, but some fans who dislike Steve in Code: Veronica found him more tolerable in this game due to him having a new voice actor and for acting far less of a Jerkass towards Claire.
Scrappy Mechanic: Most fans of the game aren't very fond of the more pronounced and active shaky-cam, which can easily mess up the player's shots, more so if they're going for a critical hit on a zombie.
That One Boss: Most of the late chapter bosses will have the player swearing at the screen, as they tend to be ironLightning Bruisers whose weak spot is small and hard to hit. The fact they often come sequentially is alleviated only by the fact that the game usually throws you a checkpoint in between each boss. Props definitely have to go to Alexia who is just as frustrating as she was in the original game. Worse then that, she comes right after the battle with Mutant Steve, himself a painful boss.