Things I liked:
The aesthetic:
The grim skull character, the warping background, and creepy faces blended really well together.
The audio:
The music worked really well, and unlike most loops didn't ever get annoying.
The gameplay:
I really enjoyed the mechanics, the strange blend of platformer and shmup style movement worked really well, and is the kind of unique mechanic I'd expect from a front-page Indie game.
Unlike most games, backtracking was not annoying, but instead fairly frustration-free, although the long travel time did get annoying while trying to beat the later sections.
Things I disliked:
No in-game control instructions:
This is kinda a pet-peeve of mine, but having to consult the project page to figure out the control scheme is pretty annoying. I think it would fit really well to have up and down arrows over the background at the start of the game, or something of that sort.
The difficulty:
The end of the game gets pretty hard fairly quickly, and in the 40ish minutes I played I was unable to beat it.
Synopsis:
Overall a very enjoyable game, and one that I got 40 minutes of fun out of.
The mechanics were very unique and enjoyable, and there's definitely an excellent full fleshed game in there.
Thanks for the game!