It feels incredibly weird to only be able to move with one of your skills. Plus the absence of any sfx or music is a bit sad.

I liked the concept of the screen being obscured by your own power, though my computer was having some issue of running it as it lagged like crazy. I at least beat 2 levels, maybe I'll give it another go when I have my new computer so it might lag less. Pretty nice job regardless! :3

It took me a while to figure out that QWE are the buttons for the icons on the bottom right; there should be instructions for that in the description.

I think what would make the concept even cooler is if the darkness is larger in radius (envelops the whole screen and increases only in intensity) and always lets you see a little but on the other hand, makes more enemies spawn around you.

Really interesting concept, nice job!