Thank you so much for your feedback! It's nice to hear that the game runs on Linux, that's not something I'd tested. Damn I swear I remember writing code to save the orbs you collect but you're right that's not working. I've added all the stuff you mentioned to a bug list, I'll try to fix them if I get a free moment, especially your progress not being saved properly.
Thanks for playing my game and for the constructive feedback!