Hi there!
- Fun/Design: The game is indeed fun. I had some troubles using the spacebar to dash/fight with the WASD combo, but after a few attempts it was ok. The dash feels satisfying tho, and the platformer works well.
- Music/Sound: The music is great, the sound effects are also alright. Nothing to say here :)
- Graphics/Animation: It's very minimalistic but works (even if the light/shadow on the background is bigger in terms of pixel ratio rather than the rest of the game). The animations are very basic tho, sprites aren't animated, the animation are done by moving them.
- Theme/Limitation: I'm not sure here. I wasn't able to complete the game because I was stuck on a level where there is a huge gap to go through and didn't figure out how to succeed so cannot tell if there is a boss at the end or not. I don't know how you did implement the "on the edge" here, I guess it's coming from the dark/light gameplay mechanism.