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I know kung fu Equip 17 Pressens at least once in your Combos

Right Back At Ya Kill or incapacitate an enemy who threw a grenade at you.

Right 4 Life Complete act 1 with 4 different characters.

Did It All Complete all side missions.

Shorty, You So Best Complete thy quest by rescuing yonder queen.

Three Times a Charm Streets of Rage: Complete 1st Level using all 3 characters

Fast Break Score at least 2 Dunks in the first minute of a Hoops game

Welcome to Nam DLC Vietnam: Get back your gear at the helicopter crash site.

It Came from Below! Kill 6 enemies with the knife while underwater in "Legends Never Die".

The Future Is Bright Complete the 404 Storyline

Serve the servant Beat 20 robot enemies

Mitko Vasilev Defeat Diamond Block league boss Mitko Vasilev

Challengers Champion Complete Challengers Championship.

Merciless Complete Chapter 4

Hard Hitter Complete the campaign on Hardened difficulty.

Biotics Bling Collect all the items on Biotics Lab

VS Zed Win Win a VS Survival Match playing as the Zeds

Ruthless Make 50 total Shots on Goal using Merc, Grog, or Ripper

Carving Turns Complete the Drift driving story

Challenge Accepted Complete the first rank of all non-level-specific challenges with a single character.

Combo Beginner Achieved 20 consecutive hits with the Combo Meter equipped

Catacombs Cash Collect all the items on Catacombs

Silverback In Black Hack the Data Vault and brace yourself for Cyber's Avengening in Dead Ops Arcade 2.

Knack Beginner Completed all chapters on Normal difficulty or higher

Outpost Offerings Collect all the items on Outpost

Sound of thunder Unlock all Codex Entries in Through Mud and Blood

Builder Complete One Relay Station Upgrade Quest (Valley Of The Yetis, Single Player Only).

Mortal Coil Shuffler Extraordinaire Accumulate 20 deaths in one Story level

It can't be for nothing Platinum Trophy

Expensive Taste Used the Grinder to create a Legendary item.

Zurkon the Legend Kill 100 enemies with Mr. Zurkon out.

Companion Finish the game with the same partner for the majority of the journey and return to the beginning.

Flying Ace Shoot down 10 enemies with machine guns in "Throttle."

Heads Down In Multiplayer, fully suppress 5 enemies

Burial at Sea Completed Burial at Sea - Episode 1.

Digitize Me! Digitized into Claptrap's Brain.

Lots of Zeros Sonic Spinball: Get 10,000,000 points in the first level

Blame The Vain Win a race with all vehicle effects slots equipped

Airspace Control Kill 10 enemies while they use zip lines or are rappelling. (campaign only)

Tower Up Golden Axe II: Complete Tower Level

Restricted Airspace EMP 10 enemy aircraft out of the sky with the hovertank in "Bio Lab."

Skilled Upgrade any ability once in single-player mode.

Complete Chaos Sonic The Hedgehog: Obtain a Chaos Emerald

Air Supremacy Killed 100 enemies with Wolf.

The Collector Completed a crazy request for Tannis

You have friends? Complete 5 events online with other players

Like Taking Candy from a Baby Finish the game on Very Easy difficulty or higher.

Defying Gravity Find both trophy pickups in 'Invert'.

Between a rock and a hard place Beat Solomon, flawlessly, in The Great Destroyer

Welcome to the Basement Win a Quick Race on any track in the Basement (not unlockable in Split Screen mode).