Gave it a go and managed to live for 6 minutes, but no idea if there is any goal other than to survive as long as possible.
The idea if nice but if focusing on mind control for damage and blocking then pathing would need to be improved - right now the mind controlled mobs have the same relative position as when they were mind controlled. I did not see any other health options other than to learn the skill from level up. Either the fire rate could be increased or MC cooldown shorter by default as I imagine it can get quite hectic the longer you play. The AOE bomb laser could have another visual than just a bit wider laser shot. Perhaps you could have a "book" for every mind control monster so you know what is special about them.