The reason that I choosed these two games is not their common type (CW is shooter, the other one is... misc), but their "achievements". Which is your favourite achievement on AU? What about CW? Tell me. Post it here.
For Achievement Unlocked I loved all of the achievements especially the nonsensical ones like having the corpses in the screen. Oh, if I had to choose I'd say the This is Sparta achievement and the Meaning of Life ones are pretty funny and my faves.
