Secret Medals/Easter Eggs....
In case you were stuck forever finding them like me:
EE 1: Wako = Click where the first weapon choice should have been
EE 2: Terrorist= Click the Turban --> Click No ---> Click Yes
EE 3: Gimp Guy = Let him shoot himself
Secret One: Die on the first guy
Secret Two: Attempt to play another game link after you beat the game
Secret Three: See terrorist EE (Clicking No)
Secret Four: Ask for help on Zombie Jesus
the rest should be obvious