PraeterXI

Specter Officer Reach max level with one class in the Cooperative campaign.

It's Not A Race! Justifiably report 100 speeders over multiple shifts in a single career.

A Minor Incident Cause an explosive decompression from the airlock.

Finders Keepers Picked up 100 game pieces.

Olympic Event Master Receive 10 gold medals in Olympic Event.

Yeeee HAW! Complete the Adventure Mode on the Hard difficulty.

Courageous Warrior Won 20 times on PlayStation®Network.

D.I.Y. Escape with more than $2,500,000 in a round of either Arcade Mode or Multiplayer Ranked Match.

Technical Wizardry Succeed at a cumulative total of 100 reversals (single player only).

SuperTilt! Tilt 10 times in a row

High Roller Complete the "Iron Clad" Special Ops mission on Veteran difficulty.

Dance Off! Execute 30 enemies while holding them as human shield.

Citizens Hero Justifiably arrest 50 people over multiple shifts in a single career.

A Nightmare On Kusi Street Purge the Infestation on the Mainland

dr0n3d Complete the "Arctic Recon" Special Ops mission in under 3:30.

Warrior Score a goal after suffering a non-contact injury with a player

Z-Genocider 2: Genocide Harder Kill 53,596 zombies

A Hippo to Go As Shelly, sprinted away from a hippo as it chased you.

Shinkoku Soldier Complete all episodes with an S rank on Normal.

Fertilizer Man Kill 200 zombies in a single game. (Map Pack 2 only)

Medic Revive 10 co-op players

Enforcer Get at least 15,000 points in one Echo round

Thrillseeker Unlock Carnival of the Dead

Trooper Complete the Game on Casual.

Mesa Dorado- Hardcore Complete Mesa Dorado on Hardcore.

Imposing arsenal Open and buy final versions of all weapons

Top Dog (Online) Got highest score on the score screen at the end of the game.

Backwards & Forwards Complete ALL levels in N. Verted mode

Drop the Bass Eliminate both Morgan and Cross in a fall accident and both by dropping a coconut on their heads.

Green Thumb Plant all 3 seed types

Mask Another's Memory Arcade: cleared a ranking route with a record better than your rival.

Music Lover Collect all harmonica melodies in the SAM'S STORY chapter.

Longest Wall Place a blueprint for a super long wall

Whatever It Takes Complete Chapter 5

Tips Collector Obtain all tips.

Ancient Marrakesh Reach Marrakesh Mastery Level 20.

Survive The Forest Finish Game

Baranor the Conqueror Complete the Desolation of Mordor with a Gold Rating.

Swimming with the Fishes In Voyage of Despair, kill 50 zombies that are underwater in a single game

Fling Me to the Moon In Der Eisendrache, use every Wundersphere twice.

Maturity Through Discipline Clear all of the lessons in the Tutorial.

Bug Spray Earn the Distinguished Flying Service Cross

2010 Hall of Fame Nominee Induct a Superstar into the HALL OF FAME.

Big Brawler Get 10 consecutive zombie melee kills before Insta-Kill expires. (Map Pack 2 only)

One Night in Bangkok Reach Bangkok Mastery Level 20.

Bored Launch every app in the system.

Extinguisher In the Sewer map, kill 5 enemies in 1 wave by setting them on fire then extinguishing them

The First Mission Clear one mission in Mission mode.

Party-pooper Sabotage the wedding.

You should be looking for Timmy Build a gazebo in a Single Player game