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Ogre's Keeper Keep the initial ogre alive as your thrall throughout the entire module. ("Darkspawn Chronicles" downloadable content)

Hasta la vista, Harper Kill Harper in Mist Ridge.

Father Time Completely unlock a time trial by completing all 3 missions.

Above the Influence Adventure Mode - Finished a game where neither player drank Sleg

Duke Dementia, Shivering Isles Reached Duke of Dementia Rank in the Court of Madness

Behind the Curtain Clear KINGDOM HEARTS Ⅲ Re Mind.

Amateur Radio Operator Listen to most of the codec conversations.

The Final Chapter Find all 7 story related intel files in Exodus.

Electrician Shoot 5 cable lines using sniper rifles.

A Secret Stitched Together Gathered all of the research notes in Amgarrak ("The Golems of Amgarrak" downloadable content)

Diploma In Creation Complete all the tutorials in the LittleBigPlanet™2: Move Pack

Fastball Kill 15 soldiers with a Zek barrel (public match)

The Battle's Won Finish the game on the RDA side.

You Broke It, They Bought It Shatter the shields of 50 enemies

Eye for an Eye Kill an Eye of Annuvin before it can summon reinforcements on the Road to Kala Moor

You Wish Hit an Ancestor with a Hypno Knife in Regular or Hardcore difficulty.

Big Baller Earn 75,000 points in a single Nazi Zombies game. (Map Pack 2 only)

The VP Treatment Possess a soldier, then shoot another soldier in the face (public match)

Blitzkrieg Travel 585 meters using the Blitzer's Teleport power (public match)

The Bad Guys Always Wear the Coolest Clothes Collect half of all equipment.
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Loyalty of the Prince Earned either a friendship or rivalry with Sebastian. ("The Exiled Prince" downloadable content)

Drive-by Complete "Drive-by" challenge

Twice The Fun Escape Awakening using two Relics in Regular or Hardcore difficulty.

Save the last humans Lifetime total of 1,000 humans saved in Survival mode

Into The Fire Complete Alsorna Introduction

All your Trace are belong to us Successfully complete all Trace Route hacks in any single player mode.

Infectious Successfully complete all System Override hacks in any single player mode.

Planet Cracker Successfully complete all Hardware Cracks in any single player mode.

Crowd Control Complete "Crowd Control" challenge

Chief Engineer Complete all hacks in any single player mode.

Unstoppable Complete the final Ancestor with at least 1 relic in Regular or Hardcore difficulty.

Expert Manager Reach B-Spec Level 40.

Dr. Time Use the Healer's power to restore 25 soldiers to full health (public match)

Hammer Time! Upgrade a weapon or piece of armor (Single Player Campaign)

Leading The Way Win every Bonus Round.

I've Come for You! Unlocked all characters and variations!
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Boom Worse than Bite 13 Bomb Dogs Detonated

Rampage Kill 20 Wargar before the crane platform gets to the bottom in the Dungeons of Dyfed

Awakening Completionist Complete all Challenges and escape Awakening in Regular or Hardcore difficulty.

Explosive Delivery Complete "Explosive Delivery" challenge

A Knife in the Dark Use the scout to backstab 10 enemies in one life.

Perfection Complete every event and Season Championship in first place.

Nemesis Completionist Complete every challenge and the final Ancestor encounter in Regular or Hardcore difficulty.

Don't leave me! Destroy 10 consecutive Sentinels before they escape in Survival mode

Maximum Payne Story Complete [OLD SCHOOL]

Pump YOU Up Adventure Mode - Battle Charge your companion 50 times during the game

My Aquarium Master Unlocked all fish.

Fellowship of the Ring Complete a campaign level cooperatively.

Competitive Glory Win each of the 4 tournaments at least one time.

Set To Stun Unlock Level 3 EMP.