I hope this game has multiple types of puzzles, both the riddle kind (water puzzle in RE3) and the backtracking get-keys-to-proceed type. For those puzzles, I hope they enhance the atmosphere of the game. In REmake, the death-trap-styled puzzles portrayed the mansion as a house of death. The mansion wouldn't be the mansion without those puzzles, since they add to the creepiness of it. However, timed puzzles are a put-off. In Onimusha, that puzzle to save Samanosuke, it was frustrating to beat, as was REZero's timed puzzle at the end of the train segment. If Zwei turns out to be a true-blue survival horror, I hope it has those types of puzzles described up top of my post.