Ecco: Talk to another dolphin

Access the terminal and battle the forces of the Cosmic Silverback in Dead Ops Arcade.

Receive orders from Lancer.

Destroy all enemies on vehicles during the prison break.

Take down Castro with a headshot.

Enter all the stores in the game

Create and consume all mixed drinks in the game

Have 10 zombies with masks on at once

Reach level 50

Mix a drink

Collect 25 combo cards

Reach level 25

Create a combo weapon