I like how different the character's three states feel, including little touches like the ice form taking extra damage from fire. At times it wasn't clear what to do (for instance, I thought I needed to collect the heart at the end, not punch it, so inexplicably died several times) and the game behaved inconsistently when I went into environmental hazards (sometimes hitlocking me until my health drained, sometimes warping me back to checkpoints with my health intact, and once or twice letting me sink in the water without doing either), but it was fairly forgiving to experimentation and remained enjoyable. Nice job!