The game was quite fun. It was clear what's going on on the screen and there was feedback when getting hit. It wasn't difficult because of the shield regeneration and life pickups, even when there was too many enemies. I was mostly using assault mode since it had the highest damage output, so other modes could have better benefits than they currently do.
I mostly found the high pitch voices annoying, but overall it wasn't bad. It could be more polished tho.