The thing about platformers, is that the movement has to be good... And you nailed it! really crisp movement, I could not stop playing!
The tension of the fog chasing you while quickly trying to read the clue from No One and from the colored characters really added to the challenge in a good way, and the art was simple but appealing!
I would suggest making the spikes stand out a bit more, maybe brighter or just a different color than the bushes
Overall very nice entry :D