This game is great! It feels well-polished and is quite the addictive experience. The controls were fluid, the loop mechanic was implemented very well (the weapon swapping is super neat!), and there weren't any bugs. The sound effects were also well chosen, they fit very well. Now, there is a bit of a problem, and that's the fact that the game gets kind of easy after a while. The initial blitz is the most difficult part.
Thankfully the experience is enjoyable enough where the experience is still enjoyable (I got to Level 7 on all nightmare levels before going out of my way to lose.), and also this is a game jam and a game that gives you power-ups infinitely, so there's no surprise that it's this way, and that's perfectly alright!Overall, this is an excellent little experience!