This is really, really cool! I love this game-play concept, and it was pretty fun. While playing, I had to think much more about how I used my abilities and ammo. There's a huge sense of accomplishment when finally completing a level.
Though it felt like I was pushing around a bunch of babies rather than commanding my army. The monster's default pathfinding doesn't work well when you want them to follow you into a certain area. Maybe this could be improved by having the player's minions more consistently walk towards the player and allowing them to walk through their own minions by default (so the player doesn't get trapped constantly).
I would love to see this get expanded upon and polished up later if u choose to return to this, awesome idea!