I loved it! Here's my ratings based on the categories:
Fun 4/5: The mechanics were great, I was a bit confused as to how to handle Jerry at first, so it got pretty difficult. I don't know if I just missed this but I think it would be great if the different tools had hotkeys. The buttons were a bit unresponsive at times.
Graphics 4/5: Pretty rudimentary, could definitely do with a bit more time, but the animations (especially for Jerry) were funny, and the flow state flames were a nice touch.
Music/Sound Design 5/5: I absolutely loved one moment in the first level when I was absolutely killing it, then pan over to the enemy concert, and it sounds like elevator music by comparison. That broke me XD
Concept 5/5: It's great. This game's already super fun, and with a bit more work I think it'll be even better.