Thanks for the kind words!
Yeah I'm pretty happy with how throwing a punch resets the killstreak. I wanted to incentivize the player to let their punch play out without necessarily punishing them too much if they choose not to. I think it works great but I noticed that it's a little confusing at first for a lot of players.
I agree that there probably doesn't need to be health upgrades. Mostly because it's not something that can be upgraded too much before it trivializes the game. It's really important that the game has some tension in my opinion, and that comes from making health somewhat of a scarce resource. I think the real issue is that players just don't feel like they have enough health, so I'm just going to change max health to 4 hearts and tweak the red gorblin spawn rates a lil bit. I'll push that up whenever we're allow to push updates.
Really glad you enjoyed it. Thanks for playing and thanks for the feedback! ^^