Graphics and music were ON POINT. Really captures that Gameboy aesthetic. There's a good post on this below, but WOW great use of the camera with the clever panning and all that; everything was very nicely telegraphed.
Only real prob was this one moment in the third room where I think I got soft locked and had to reset after obtaining a key -> dying -> and then using that key on an early door. But because it turned out to be an optional door, I couldn't progress out of the level because there was only one key in that room. Unless I'm mistaken??? Was there an extra key hidden somewhere in there? It was kind of hard to backtrack there anyway because at one point you cross a staircase, and seemingly you can't walk back through a staircase if it's on the ground because your character will instead climb up it? I hope I'm wrong about that...
Besides alllll that... SOLID stuff.