The art, music and sound effects are so nice and cohesive. They are the main motivation for me to keep solving the hard puzzles.
The difficulty of the game, in my opinion, owns to the implementation of jump mechanics:
1. If I didn't observe it wrongly, the jump mechanics seem to be always triggered after a fixed interval? This actually makes it harder for player like me to predict where the avatar will jump in the level, because any intervention (like a block which stop the avatar for little time) would change the position of next jump. This makes it almost impossible to solve avatar movement intuitively, but only after hitting "Go" button. I would suggest that the jump mechanics could be set to "triggered", e.g., triggered at the edge of a platform.
2. The jump will be blocked if the avatar is close to the wall (instead of jumping straight up). This also makes the levels harder, and makes me feel a bit discouraged after failing too much times on this.
Besides this, the level design is very progressive and is itself a great source of tutorial. I would love to follow the game's future updates!