Really interesting aesthetic, and had a very professional vibe about.
I think the black/red worked quite well for this, though it sometimes did make enemies hard to see.
I liked the variety the different mini games provided, and combat was generally pretty satisfying, though since it used the mouse it felt like I should have been able to fire in any direction, and the enemies that could fire through walls, and sometimes having the laser enemy spawn right on top of me felt a bit unfair.
The UI covering the bottom/top of some maps was kind of unfortunate, the camera should have been allowed to move up and down a bit.
I also had an issue on the first map I played where some of the enemies went off screen I think and I couldn't progress. An exit/restart would have been nice.