I liked the music. :) Everything else was good too, but I feel like the deadline came a bit too fast, right? I feel you there though! (that design of that angel/skeletton is so cool though!)
The boxes behaved a bit weirdly and a switch seemed to be placed a bit too far down into the ground, which caused it to activate repeatedly. I also got stuck in the room with two switches and two boxes Even when both boxes were on top of the switches the door just wouldn't open. Upon a restart the issue was gone however, so wasn't a problem!
All in all: Good game!