Really satisfying mechanics, especially the knock-back. I really enjoyed kicking entire doors off their hinges straight into enemies, sending the doors and bad guys flying back. The melee style of combat is a good fit for this theme imo, and I really enjoyed it amongst all the gun games I've played so far. I dunno if you want suggestions, because I know it's just a prototype, but with some extra environments/levels/art tweaks, a small plot, and some difficulty ramping, I could see this being a full game. The knock-back could be a major mechanic and you could have a real-time Fights in Tight Spaces vibe (just the combat obv not the deck stuff).