And any friend of a fiend...

http://www.etienne.nu/imagepuz/

It starts off with 15 image puzzles, then some simple cipher puzzles, and then a bit of math, and then some general knowledge. And then it gets hard.


There's a hint that might actually scare you away from trying this puzzle here: You'll probably want to drag out photoshop or some similar image manipulation program for some of the puzzles.