Neat game, I really liked how the music was very location-specific. how did you pull that off?
Felt a lot like a lego game - get a different costume with different mechanics and solve a puzzle. Would have been nice if it was a less 1 costume -> solve the 1 puzzle, but I didn't make it terribly far. I got stuck with the viking costume trying to jump on the crates. I kept falling off and the viking can't seem to jump high enough to get back on top.
Was getting the ninja costume in the 2nd level for something? I wasn't sure if it was for the next room and when I entered, the costume was gone.
Overall well done, with some minor gameplay fixes it could be great!