I really like this concept! I agree with some of the other comments that the sticky peanut butter sandwich bomb could be a different color to stand out better. and that maybe the falling blocks should be locked into the z-axis, a few times I thought I would hit the bad guy and it would fall past him, but that's really it.
Really great job on this one guys! (I probably should have watched the video first because I spent far too long trying to kill that first guy with the bomb itself!)