A fun little game! The gameplay was entertaining enough, but it was fun chatting with the devil. You admitted yourself there was a wee problem with the difficulty (wave 4 was much harder than wave 5 for me) but it didnt ruin the game or anything. I guess it came from the randomness of the ghosts, maybe a little marker pointing out where they would appear before they did would encourage a little more strategy? Anyways, nice work!