A difficult but fun game, and funny too. Very challenging (I didn't manage to finish any of the levels; you got me with that green key!). It would be nice if the yellow circles were a little easier to use, the hitboxes weren't always where I expected and it was hard to maintain vertical momentum. Respawning after death is quite unforgiving (maybe they could shoot you backwards instead?), but it helps that the levels are independent and not too long. I enjoyed spreading the butter, great work!
PS: Thank you for the Linux build :)