Anyone got speed-running tips and tricks they have found

Hey dev, maybe the chapter achievements are broken atm. I played the game through ch. 1-3 and didnt receive any of them. greetz :)

Maybe a workshop page too. I would love to make some levels with custom textures.

Yeah, I bought this because it was cheap, had good reviews, and was listed as natively supporting Linux. Tried to run it, and was instantly met with an error that it couldn't find the .exe file to launch the game. There IS a Linux binary (Linux.x86_64) in the game folder, but when I try to run that from the commandline, it just drops back to the desktop immediately. Anyone on Linux had any luck with this game, and if so, how might I get it running properly?...