The linux build seems to be missing the data files, but proton was able to run the windows build. The game looks nice and plays well :)
I like the idea of unlocking abilities to take different paths through the level. The design could be improved however. If you miss the first elevator I think you're screwed and have restart? Once you get the first jump you can take essentially all paths. The remaining upgrades only allow you to go through some areas faster, which is nice, but doesn't add much. Maybe you could add some paths that you can only take once you get certain upgrades, like in a Metroidvania.