Edit, a day later lol:
Every single concern in my original comment was addressed, and the game is very fun indeed! Great job!
Original comment:
I feel like something must've broken since the demo video was shot; every game I start, the enemies are overlapped, and when they hop, it changes which enemy is hit by incoming bullets, so the damage that any given stack of enemies(all occupying the same space) receives is divided by how many enemies exist inside the same hitblock. So even if i only aim at "one" enemy, I basically can't kill more than one stack of enemies before the wave crashes against my base. which means the pink & shooty guys have dozens of meatshields between me and them. I'm always dead before i can hit level 6. a really cool idea, and pretty fun! I'd like to see the overlapping enemies get fixed, and the way collision works could maybe use an overhaul(it often doesnt bounce or ricochet in realistic ways; like, if you aim at the wall to bounce a shot into the sides of the enemies, it just slides up the wall instead of bouncing), also would be nice to have settings that persist through each run, like not having to click the skip tutorial button every time, or leaving autofire on by default. if you were going to expand this into a longer experience,i think a basic prestige system that gives you just a scoshe of continuity between runs goes hard.