All around this game is amazing, I love the 2D character with the 3D environment. I think personally, with this style of game, it'd be really interesting if instead of having the player control the camera and where it's looking with the mouse, instead you use a form of rotating camera, where the player uses E and Q to rotate the camera 90 degrees in all directions, similar to the game FEZ, and use the rotational camera as a puzzle itself. Having the character look one way, but when they look another way they see the puzzle as it is. Great work!