Achievements idea

[A New Room]

What can be unlocked and how do you go about doing it?

Funny/entertaining videos and sound clips, and Unused/Interesting Concept art are all that I can think off the top my head.

As for the how I know not... :P

If you are talking about what the achievements should be, I would say the best way to think of that would be to look at the game and decide what would a funny/logical thing to try and do.

[ragegun]

legion of the the dead kill an enemy keeper with only undead creatures