This is a super fun little game, and I got such a kick out of the art style; great job on nailing the look and feel of everything. The gameplay a pretty classic formula, but well-executed, and the art style adds a lot to it.
Each of the powerups I got was really satisfying to use, and, as most others have said, the animation while picking the powerup is incredibly funny. Maybe this is a skill issue, but I couldn't figure out a way to reliably dodge the rats when they charged up to jump at me.
Also, I'll admit that the fact that AI did the coding here kind of sours the experience a little bit, but I really appreciate you being up front about that instead of trying to sneak it by anyone.
All-in-all, this is a great little game, and seems very replayable. Nice work!