Fullmetal-GTO

Streets Sweeper Unlocked after the player discovers all collectibles in Act I.

Serve the servant Beat 20 robot enemies

Finders keepers Open 10 small chests.

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

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

Validation Excellent Work Restorer.

Lover, Not a Fighter Sneak past a group of enemies without alerting them.

Outlander Arrive on Solstheim

One of the Many Defeat the ultimate evil within.

Look at those reflexes! Clear a speed level wihout dying or missing any orbs.

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

First Step into Darkness Complete the game on Casual difficulty.

Mortal Coil Shuffler Extraordinaire Accumulate 20 deaths in one Story level

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

Combo Beginner Achieved 20 consecutive hits with the Combo Meter equipped

Son of Medici Complete Story Mission: Son of Medici.

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

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

Nice Try Engage Witch Time successfully 10 times consecutively.

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

Impossible Trinity You completed the mission "Museum Piece".

Those Signature Moves Activate any of the Signature Skills 100 times.

Burial at Sea Completed Burial at Sea - Episode 1.

The Family Life Unlocked when the player examines Didi's family pictures.

YOLO Among Thieves Beat the Last Chapter Without Dying on Normal Difficulty or Harder

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

Mercy is the Mark You spared Daud’s life

The Collector Completed a crazy request for Tannis

Patience is a virtue Experience all 3 endings in the Campaign

Master Grenadier Kill three enemies with one grenade

Homo Homini Lupus Est Save 15 survivors from Rais's men

Entry Level Electrician I should get this whole generator panel running just in case. (Ch. 14)

Swan Diver I Swan dive from the top of the Kraken Room

Walk Free You successfully lost a 4 star wanted rating.

It's All In the Writing Find all text collectibles

Big Boy You killed a tallboy using only your sword

Tranquility Lane Completed "Tranquility Lane"

Towering inferno Finish episode 7

Biter bit Remix Charles

The Life Exotic Obtain and equip a piece of Exotic gear.

Script Kiddie Finish the game in Script Kiddie Mode

Final overload Destroy H3O

Magma Racer Earned a silver medal or better in the Rift Plane Health Race.

Goblin's aren't so bad Encounter the Old Goblin.

Backtracking Ride the crates

School of Hard Knocks Request Stiles to toss you grenades 15 times.

Light at the end Defeat Krogma on Crystal cave.

Guided by Sparks The crate is key

Registered Voter Head to 'Arena Preferences' and use all of your votes

Block This! Perform a 10-hit combo with any fighter