I liked the overall idea.  Things got difficult once I made it to the fairies and mushrooms.  There were some parts where I got to move forward without completing the puzzle.  Also, not sure how this meets the theme.

Cool puzzle. The controls were pretty unresponsive causing a lot of deaths which wasn't too frustrating at the start but as the sections get longer dying to an eaten input gets annoying. Not sure if intentional but a couple sections I was able to fill all the tiles and be nowhere near the end. But it set the checkpoint so I was able to move on. Overall the puzzle aspect was fun but I would love music/sound FX and tighter controls. 

The puzzles seem good but I didn't get very far because of issues with the controls. Sometimes they wouldn't respond, and sometimes I would move multiple spaces. It was really punishing since one wrong move makes you start over... I wish that shrubs and shards just acted like walls instead of instakills. I'm also confused what the point of the red-eyed shrub monster is, since leaving the path kills you anyways.