Sorry for reviewing this so late! I wanted to complete the game first, and some other stuff came in between.
This is a very good game, especially for having been done in Stencyl! This is one of the games that shows what the software is really capable of!
Firstly, in terms of art and animation, this game is astonishing! The style is very cool.
At times, some animations could get a bit odd, like when quickly shifting between hanging from an edge and climbing up repeatedly. But even that looks pretty okay.
Only thing I noticed, is that the "falling" animation doesn't seem to turn even if you switch between the arrow keys. that is to say, if you're on the way up (jumping) your character will mirror flip once you change direction, but if you're falling, the character will just fall backwards.
Most of the controls felt fine too.
Also, I really enjoyed the music in this game; it fits the style so well.
I think the weakest part is the gameplay itself (not weak, but not as great as the other aspects of the game :D). I was thinking about leaving the game after a while, since it started so slowly. But since more elements kept being introduced, I finished the game. That was a really good choice!
personally, I've played more entertaining games in terms of gameplay, and more original ones (at first, at least; the more I played, the more original the game became because of the newer additions, like taming demons and such). I didn't find the puzzles too challening though. That said, I'm not going to go for the "Good Karma" badge.
I also found an odd bug in the beginning, and I'm really sorry for not remembering exactly what it was! I remember I went somewhere in a map I wasn't suppoed to go (but that might not have been the problem), but I got stuck somehow, and had to restart. It's such a shame that I don't remember... Sorry for that!
EDIT: Actually, I decided to replay the game up 'til this point. Turns out, it's in the "just action" level. If you use the platforms to climb up all the way to where the key comes from, all the way to the left, you're stuck. Hope this helped!
(Also, sometimes when one climbs up stairs, one seems to "get stuck" at the last step, but if you jump or change direction, one is free again).
Then, there's the story. I really liked it, and although I've seen better, this belongs to the good ones. You get to see a character development, and there's an antagonist as well as a wise mentor, and all that good stuff. Naturally, this is the classic story (the disciple that first betrays the master, but later becomes one himself), so not as original as it could be, but it had its own twist to it, which is nice.
Also, the medals were pretty good.
I'm a hypocrite for saying this, but I would've liked if a level select option was available after one has beaten the game. I guess that's just a personal preference.
All in all, this was a really enjoyable gaming experience, and I wish you all luck in the contest!
5/5, 9/10.