Amazing concept, and really clever puzzle design to go with it! I do have to say it can be VERY frustrating at times, although the slow mode was an excellent way to combat this. Still, I'd say the most annoying part was the fact that the hitbox changed when I changed direction, meaning when I was very close to the thorns without hitting them, I would move in a different direction, and they would somehow kill me. For a game like this where the difference between winning and losing is often pixel-precise, it's probably best to have the player hitbox as a perfect square, positioned directly in the middle of the sprite, so the affore-mentioned problem doesn't happen, and frustrate players. Nice art and music, overall, good game.