Kill 5 enemies in a row using 5 different weapons or attachments in Single Player or Special Ops.

Take 14000 steps or fewer in one playthrough.

Complete Claire's story on "Standard" or "Hardcore" with an S rank.

Demonstrate killer economic sensibilities by taking down 3 enemies with a single bullet.

Use the explosive bolts to kill 30 enemies in the campaign.

Witness the true ending.

Kill Fajar at the end of the Squats.

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

Perform 3 takedowns within 12 seconds. (Ignored in introduction level.)

Reach legendary Gunslinger status

Take down an AT-AT with tow cables in Battlefront

Reach legendary Frenzy status

Reach legendary War Hero status