Congrats on finishing the jam! I managed to get to level 2, but then died because the ground was deleted :(
I think that movement-wise there is potential with the enemy spawning and the platform positions. It would be nice if there wasn't the possibility of falling off the map until maybe later levels. I think the starter levels should be more boxed in as you learn the movement mechanics.
I would've really liked more audio cues in regards to the enemies. Shooting is one of them but often an enemy will spawn behind you and you will not know that it is there and that it is shooting at you and then you will die which is unfair.
I also wish that there was significantly more ammo and less exp needed to level up. It is awkward to jump around and shoot and aim if one of my WASD fingers is being used to scramble and find Q (of which I hit tab). I found myself reloading more than engaging with the environment and the enemies. You also need to kill A LOT of enemies to progress at all, and the enemy hit box seems to be very small so even though I felt like I should've hit the enemy I did not.
I had to stop playing because the game was causing my wrist to flare up - maybe consider gamepad support for the future to help with this.
I think there's potential, but it needs some more refinement. Great job!