I really like the game. It's a great puzzle game but I think it has it's problems that are making it a bit worse.
First of all, I think the breathing mechanic is just a pointless thing in the game that makes it more annoying. It doesn't add a challenge to the game, it just makes you spend more time every time you fail. (But it does make the player think through the solution which is good)
The game is trying to be 2 things at once. Being a puzzle game, I feel bad for failing not because of me not solving the puzzle, but because I wasn't able to walk onto a minecart. GMTK had a similar problem with his magnet game and solved it by focusing solely on puzzles.
Other small things like controls (please make WASD movement along arrow keys, accidentally using wrong abilities)
But the game is great if you ignore these parts. Fun puzzles, look really nice and I would prolly play it if it was on steam and got more difficult.