Survived the Diner Otherworld.

Become the Bat

Finish the game in Hard Mode

Finish the game in Easy Mode

Kill 10 enemies with thrown-back grenades

Defeat 30 enemies with the Tau Sniper

Defeat 30 enemies with the M9

Find 60 treasures

Defeat 50 enemies with stealth attacks

Play in the swimming pool on the Cruise Ship

Defeat 30 enemies with the KAL 7

Throw back a grenade and defeat two enemies at once

Complete a Special Ops Mission Mode game on Hardened or Veteran with no player getting downed.