Hi there!
- Fun/Design: to be fair, I did not understand what I need to do and what are the controls. I basically walk into the room, get reset to the middle if I hit a wall, and don't see how to grab things or interact. Maybe you should have written a tutorial somewhere ingame or in the description of the page?
- Music/Sound: The music is fine even if very repetitive. Could have been a bit longer with some variations before looping. I heard no sound effects so far but maybe because I didn't find how to interact?
- Graphics/Animation: I'm not very fan of games where the pixel aspect ratio isn't the same between sprites. When doing pixel art, it's better to make all the pixels look similar. In a good note, I like the little characters, they look cute and their animation - even if simple - are doing the job.
- Theme/Limitation: There's indeed a boss so it fits the restriction. For the theme, not sure about how you implemented "on the edge", the only thing I see is that when you go close to a screen edge, you're getting teleported to the center of the scene.