Fun game with a simple concept. The high amount of levels and the difficulty makes people play it for a pretty long time. (if they are persistent)
Engine was ok with a few weird collisions.
Thanks for sharing your knowledge on these effects. I was always to lazy to figure out particles and such on my own. This tutorial may help add many graphical boost to many developing games.
I like the concept of the game; though I found the difficulty curve too low and framerate to my distaste. The hits are a bit inaccurate and the coup de grace on every last person was kinda cheesy. Overall I enjoyed this game. Well done and very original.