This was really interesting! I was skeptical about how the boss fight would work, but I really enjoyed it. I wish the power-ups were a little better telegraphed, because running into one that stops you from moving forcing you to start over felt more unfair than like a real puzzle, and some of the levels I had to brute force my way through. I also really liked the mouse movement, it was just a little difficult to understand what was happening starting off. I think if you put an arrow or an indicator at the front of the character that rotated to point at the mouse, it would become a lot more intuitive. Overall, good work! This is a cool concept to explore, and I really liked the ever-changing rules -- flipping from a top-down game to a platformer to vvvvv must've been quite a bit of work to get feeling right.