Oh man, this is awesome! I was really excited to see a VR submission! I almost did one as well, but it's been a while since I've made a flat screen game so I decided to do that instead. But huge props to you for making one!
I really liked the game! Going from being an overseer to an on the ground troop was a very cool move. I especially like that you actually get to play as the ground troop, and not just watch from it's perspective. I do think a little bit more feedback to help tell if you're hitting the enemies or not would have been helpful. Something like a health bar, or a little cross hair "tick" or something.
But overall, this was awesome! I've been wanting to make a game like this, and you've inspired me to give it a shot! Incredibly well done!