Killerrabbit

I have spent quite some time today to understand how to work with external images and even longer (a lot longer) tweaking images. The translation to in game visuals using "blitting" is tricky if you want to get it pixel perfect. I think it would make sense to collaborate on these picture files as well so I packaged the images along in a media folder. 
For example I also fixed the border on menu_background (now 10 pixels wider to cover gap on right side)
Finally I added one media item, its not perfect yet but it conveys the message :-) Additional GIMP work is of course welcome!
I added an extra monster, you'll know when you meet him. If you can't wait to meet him, uncomment line 565. Run Awaaaaay!