Really nice art style and sound effects. I liked your level design too, you introduced concepts and built upon them in each level. Great job! I liked the touch where your character goes x.x when it bumps into the walls too :D
i did plan to add more expressions when stuff happened like turning on switches or throwing batteries, but because everything else had to come first i never really ended up getting that far
maybe i'll come back to this eventually, i'll see how it goes