This might not be an artistic jam but I love the visuals and small touches, like the cogs in the backpack.
The design is nice. I would've liked to see this more as a tactical shooter kind of thing rather than a wave based thing. I like that you have multiple kinds of enemies that do very different things. I see on your gif that the cursor is there but for some reason mine wasn't on screen so it was hard to judge where I'm currently pointing so there were times when I just spun around like a mad bull :D
All around fun game, congrats :)