Neat game, I feel the controls are very floaty. I found some bugs, if you walk back towards the disappearing floor and appearing spikes you eventually get to a point where the disappearing floor/appearing spikes do their animation again and when playing again after beating the game the first level is labeled as level 4. Luckily none of these bugs are gamebreaking, just little bugs, so good job on having a really polished game.
The levels are fun, and the trolls are very easy to learn, I just wish there were more levels in the game because it feels very short. I hope you plan on expanding the game after the jam is over, because I'd love to be able to play more levels of this.