Seeman23

Silent Sniper Complete The Last Yardbird as Silent Assassin.

Island and Chill Complete The Last Resort.

You know you're REALLY Insane, right? Complete the entire main campaign on Authentic Plus difficulty

Hokkaido Escalated Complete Level 5 of an Escalation Contract set in Hokkaido.

Lights Out Complete the "Light 'Em Up" Special Ops mission on Veteran difficulty.

"Passing through" Complete Training Course without getting failed.

For Science! Researched all technologies at least once before the year 2005 in a single game

Two's Company, Four's a Party Complete any Adventure level with 4 players.

Chuck Greene: Cross-dresser? Change into all pieces of clothing in the game

Useless Trinkets Completed the "Digging up the Past" side quest.

It's a Bug Hunt Eliminate 10000 xenomorphs.
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Burgertown Escort Service Rescue 1 survivor in Infection.

Double Trouble Complete The Pen and the Sword in Multiplayer.

He knows what they did last era Found all eight audio notes in the Ancient Labyrinth

Confidence Boost Win a Battlegrounds league Clan Match.

I kill dead people Killed 40 ghosts in the Ancient Labyrinth

Ragazzi del 99 (Gelatus purgutoria) Pay a visit to the Ice Cream seller.

Chimp on the Barbie In Ascension, kill a space monkey with a fire trap.

Acquire Waffle Weapons! Obtain the Ray Gun, DG-2, and the Monkey Bomb at the same time in a game. (Map Pack 3 only)

Deliver This Complete the "Special Delivery" Special Ops mission on Veteran difficulty.

Come On And ... Slam 10 zombies at once in Outbreak.

Positive cash flow Complete a Financial objective in Career Mode

Ending E Achieved "Surprise!" ending.

Friends With Benefits Had relations higher than 90 with all factions in the Modern Era

The Twilight Tickler (Bulblio Bulblio) Congratulations. You lit all the fairground lights without zapping anyone.

Better than the Best Complete the entire campaign on Authentic Plus difficulty with no manual saves

I Challenge You to a Duel Complete a Medieval level using only Lou Don Jim

Honorary Member Reach Isle of Sgàil Mastery Level 20.

Save the Poet Complete The Pen and the Sword in Single Player.

Celebrated Master of Ognapology (Ognadae Tetratetron) Find four different species of Ognapod.

The First One is the Hardest Get your first 1,000,000+ combo

The Boss Beats A Boss Defeat a boss using only President of Sony Computer Entertainment Worldwide Studios Shuhei Yoshida

Thanatophobia WITHOUT using the Architect, complete the game dying 15 times or less

Flyswatter Destroy all helicopters in the "Vertigo" Special Ops mission.

Pinnacle Complete the "Vertigo" Special Ops mission on Veteran difficulty.

Street Fighter Complete all Dragon's Teeth Assignments

Overwhelming Confidence Complete 25 successful Challenge runs.
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Making mountains out of molehills Kill 100,000 enemies.

Head Trauma Use every type of melee weapon on a zombie

Mercy Kill 5 enemies while they are on fire in Chapter 3: Fire Sale

Untouchable Emissary Reach the end of the game without a game over.

That Party was Ace Ace every Adventure level in The Journey Home.

ARCHIVIST Collect all documents

Alright, Alright Survive until round 10 in Infection.

Deadhead Get 150 zombie headshots in a single game. (Map Pack 2 only)

First Blood Get the first kill of a match.

Nightwing Revenge Obtain 78 medals on the original Arkham City and Nightwing Bundle Pack ranked maps (as Nightwing)

Don't burn yourself out Defeated the Keeper

Survivor Survive until Round 25 in Outbreak.

Falcon and the Snowman Complete Crime and Punishment in Single Player.