I like the concept of the game and the art style fits in really well with it, I just wish I had a little more fine tune control of the slime so he wouldn't move so much when I tapped a movement key. But it could also be exactly how you want it since it seems to be a more hardcore style of game.
A nice little game with simple controls, I also like the color design across the game. The controls felt a little clunky in areas where combat was more intensive (could have just been a me thing), but otherwise a really solid game.