I got stuck at the black eye part (I could double-jump sometimes but I didn't know what caused it. In general, the level design and signs were intuitive without using language, which is always a plus; the level design was good. The walking animation could be improved - very often you see 'walking animations' where just the legs are appearing and disappearing, instead of the legs actually moving from one side to another, the arms moving the opposite way and the head bobbing. Apart from that, I'd only recommend a tad more polish - i.e. particles. It's generally a quite well-made, enjoyable game.