quite a letdown. the level design is kinda weak - there's a lot of narrow corridors and enemy encounters rarely feel very unique as a result - and the excessive puzzles are far-too-frequent pace killers that feel like they're intended to pad out the run time. there's a lot of ideas, but doesn't really explore any of them to much depth - especially the aperture connections and multiple-universe references that are disappointingly dropped about 2/3rds of the way into the game. the military-shooter style for the guns with ADS instead of HL2's usual hipfire is a weird choice that doesn't add anything to my mind, and combined with the pretty broken enemy AI and aforementioned poor level design i ended up tired of the combat and unimpressed by the puzzles. it's a shame, because the aesthetics are incredible, and i gotta give props for the effort to voice act all the characters, even if it's not great in english. entropy:zero 2 clears, i'm afraid