Fun experience :D
Love the fact that the use of prerequisite is not literal to controls like in most games! Art is pretty too and concept itself is interesting.
Interactions could use a bit of polish. Seeing more clearly when spikes can kill us, having movement that is a bit faster (especially on level 3), lighting up the used button and fan, etc. Things that would make game a bit more readable and enjoyable :D
But apart from that it was a great submission!