Reminded me a lot of Portal, in a good way. . .I'm having to use safe mode with networking, so I can't say if the music or sound effects were any good, but I'll hazard a guess and say they were. Love the behemoth chicken and red castle crasher knight characters, love the idea, love being able to skip levels when I get really frustrated...Just generally a good game. And a reminder of the codes, gotten from muiscinmotion:
Behemoth Chicken = Shift+?
Girl = G+L
Jar = C+T
Pinwheel = C+G
Castle Crashers Red Knight = N+G