I liked this game and needing the cat to kill enemies was a neat mechanic. The cat's AI was pretty good, though sometimes it seemed a bit slow and wouldn't realize that there was an enemy to kill until I lead him closer to it.
It would've been cool if enemies were more varied, as most of them just run at you. I think the magic ones were different, though I only saw them do something once (the first time I saw them) when a skeleton got teleported outside the map. I also ran into a bug where I couldn't replenish hearts and was capped at two for some reason. Overall, nice game. Gameplay was fun, graphics were nice, movement was solid, and mechanics were interesting.