Some collision issues solved so far as well as the addition of blood on top of the zombies. A couple of graphical changes and the zombies now explode upon death, making the eventual piles more maneuverable. Me and @renegadePunisher have been working for a fair few hours today, and are expecting to be working for a fair few more - just to get a game loop introduced. Everything else comes after that.

Now here's a gif: