I enjoy the gameplay! After getting past the freezing, the controls feel very fluent and the variety of enemies keep me on my toes. Fits well with the theme too since the perks and level are random after entering each door.
What can be improved:
- More feedback when I get hit. I sometimes don't notice I am in low health until I peek over to my health bar. Probably a camera shake could do the trick.
- More flying enemies? I found myself at times jumping to high places and shooting down all the ground-level enemies easily since they couldn't reach me.
- More lava pits variety. I like the lava pits idea.
- Enemy health bars. Good to know if I am close to destroying them, and it adds more devastation if I die to an enemy with low health.
Other than that, I really love your game!