Let me tell you, impressive. For what your group did, it was done pretty well in terms of 2D art and functioning systems.
I'd like to add onto all the feedback regarding visual/auditory input. Didn't know exactly what I was doing until after about 10 mins of (trying) playing. This was even after I read your descript--just simply didn't know if what I was doing was having any effect.
That bein said, nothing but respect. Your team had a vision and followed through, and it shows in your entry!