Alright, the piece of shit CRASHED on me on the second half of stage eight (I had nearly made it to the end already but unexpectedly got hit by a hand on my way to the flag).
That on top of getting stuck at the beginning of the second half of that level after making it through the first half in only 10 minutes (protip: stand on something that you know will keep your wait during changes, during that stage of the level there's only one type of block you'll want to run out on, so you can headbutt it - it's the "neutral" color with the enemies sitting still). An hour later the game crashes...of course.
So Youtube filled me in on what happens.
What a waste of goddamn time.
(i raged)
Pretty quick to finish the game even with the shit movement (not falling through holes in the floor easily is both good and bad...but in the last level, mostly bad).
While we're on the subject of "games that think they're gonna fuck with you hardcore," Paranoia:
http://www.moddb.com/mods/paranoia
HL mod, which means it's not 2D. Lots of STALKER inspiration in there. be careful of crashes in that one too.