Sabotage the Soviet space program.

Receive orders from Lancer.

Escape Vorkuta.

Ensure your squad escapes safely from Cuba.

Take down Castro with a headshot.

Break the siege in the battle of Khe Sanh.

Escape Kowloon.

Retrieve the dossier and the defector from Hue City.

Kill 10 NVA with Dragon's Breath rounds.

Continue playing to unlock this secret achievement.

Crack the code.

Find the Soviet connection in Laos.

Escape the Past.

Complete the campaign on any difficulty.

Rack up a body count of 20 NVA using air support in Hue City.

Reach rank 10 in Combat Training.

Silently take out 3 VC.

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

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

Destroy all enemies on vehicles during the prison break.

Finish 5 Wager Matches "in the money."

Continue playing to unlock this secret achievement.

Use the Grim Reaper to destroy the MG emplacement.

In Ascension, escape on all 3 lunar landers.

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

Destroy all slingshot targets in 3 attempts.

Destroy all targets and structures while making your way up the river.

Watch a film or clip with a friend.

Make it through the NOVA 6 gas without dying on Rebirth Island.

Complete "Operation 40," "Vorkuta," and "Executive Order" on Veteran difficulty.

Kill the Pentagon thief before it can steal your load-out.

In Ascension, kill at least 5 zombies with 1 Gersh Device.

Enter the Soviet relay station undetected.

Guide the squad through the Soviet outpost without them getting killed.

In Shangri-La, get something from the monkeys.

Kill 7 monkeys in under 10 seconds in the Rebirth labs.

Use no more than 6 TOW guided missiles to destroy the tanks in the defense of Khe Sanh.

In Shangri-La, dispose of a Napalm zombie without it harming any players.

Kill 5 enemies with a single frag grenade in the campaign.

In Shangri-La, kill a Shrieker zombie while blinded by it.

In Call of the Dead, cut the lights on the Director.

Incinerate 10 enemies with the flamethrower attachment in the POW compound.

Buy every weapon off the walls in a single Zombies game.

Complete the campaign on Hardened or Veteran difficulty.

Use only dual wield weapons to escape Kowloon.

In Moon, hack something.

In Ascension, kill a space monkey with a fire trap.

In Dead Ops Arcade, use a Speed Boost to blast through 20 or more enemies at one time.

In Call of the Dead, send the crew to Paradise in solo or co-op.

In Call of the Dead, make a zombie explode using the V-R11.

In Call of the Dead, send the crew to Paradise in co-op.

In Moon, complete Richtofen's grand scheme.

Continue playing to unlock this secret achievement.

Complete "SOG" and "The Defector" on Veteran difficulty.

Destroy both helicopters with one Valkyrie rocket from the deck of the ship.

Get to the POW compound in the Hind using only rockets.

Complete "Crash Site," "WMD," and "Payback" on Veteran difficulty.

Complete "Numbers," "Project Nova," and "Victor Charlie" on Veteran difficulty.

Complete "Rebirth" and "Redemption" on Veteran difficulty.

Find all the hidden intel.

Escape the ship with 2:15 left on the timer in Veteran.

In Moon, become trapped in the Receiving Area and free yourself through resurrection in co-op.

In Moon, acquire 3 pack-a-punched weapons at the same time.

In Shangri-La, acquire the focusing stone.

Continue playing to unlock this secret achievement.

In Ascension, Pack-a-Punch a weapon by round 8.

Shoot at or be shot by an ally with a Pack-a-Punch crossbow and kill six zombies with the explosion.

In Shangri-La, use the 31-79 JGb215 on each type of zombie.

In Call of the Dead, kill 10 zombies with one Scavenger shot from over 100 feet away.

In Moon, prevent each excavator from breaching the base in one game.

In Moon, purchase every perk in one game.