Suuuuper cute! I loved the character designs a lot and the combat was really fun, especially during the boss fight at the end. I think the teleport gun loans itself really well to making interesting puzzles and bosses.
As for some criticism, the controls felt kind of cramped on my keyboard. I wish they were more spread out. Also, I think it'd be nice to have health drops last a little while longer before disappearing. It wasn't too bad, there were just a couple of times where enemies blocked health, and in defeating them, the health disappeared.
I'm looking forward to more!