What a lovely game! I love the music and presentation. The menu borders are great and very Gameboy-like. I also really like how the puzzle mechanic was inspired by Brazilian folklore, I just spent some time learning about the Curupira. The puzzles can be very good, and had me scratching my head a couple times. I really like how the Curupira's footsteps face the wrong way, it helps the puzzles a lot.
The big thing that I think isn't properly taught to the player, is that the hunter will circle around groups of trees. Including that piece of information in the instructions would help, or I would suggest swapping the 2nd level with the 3rd. That way, you have 2 levels where you can see the hunter circling the trees instead of one, before requiring a puzzle with it. It would also be nice if you could detect if the hunter gets stuck against an edge, and prompt the player to restart. I spent some time trying to lure the hunter back with the whistle before learning he only changes direction from footsteps and running into trees.
Great work, guys!