I know this game doesnt have much of an active community, but I figure I'd post. I am starting to learn how to speedrun this game on the PS3 version (is this version allowed?). My best time is approximately 1hr 40m ingame. I struggle in the auto scrolling section (keeping a combo going long enough to get enough points to buy the Antitank rifle at the drugstore can be tricky since my TV has such bad response time), and the underwater segment.

Thanks for the reply! I've just been picking up the key and unlocking the box to get the elevator code, but Ill probably start trying to enter the codes first and hope for good RNG. Last night, I was able to shave 25 mins off my PB to 1hr14m, but I dont have a way to record gameplay yet. I've just been watching Deadhunter's WR run on Youtube for strats.