This game has a fun premise, I like organs.
After a few minutes the need to spin constantly was starting to strain my hand however. Also in terms of game design, this being the only way to attack made the game feel not very deep, and since you have to kill everything anyways, the mechanic of the killed enemy determining which part of your body gains XP is superfluous too.
A fun concept and premise, but the core loop could've used more time!