Thanks everyone for the feedback! :D I agree, the fetching is repetitive and the evolutions should be a bit more spaced out (shooting is completely pointless at the beginning, for example)
I don't think it's clear, but in the game there is only one enemy (Gurl) that is the natural predator of the protagonist (named Sid) and both evolve at the same time. The whole point is to evolve in order to survive :)
I rushed to get this out in time for the deadline as I was freaking out saying "I'm not gonna make it, I'm not gonna make it!!!" Anyway I'm satisfied with it :)
I think I'll really make a post compo version, maybe a much bigger and polished game :)