CausticVariation

Don't You Die on Me! Revive another player in Co-op mode

This Is Your Brain Discover every location in Vaas' mind

Axes High Kill 30 enemies using Fodder axes.

The Elusive Elder Dragon Earn the right to take on three-star master rank assignments.

Skilled Steamworker Send the Steamworks into overdrive.

Freudian Field Day Unlock all weapons in Vaas' Armory (Solo Game only)

Drill Sergeant Complete the Drill Room without taking any damage.

A Different Beginning Clear Chapter 1, "An Oath."

Prank Call Lure an enemy with a phone call and lock them in a room. (Ch. 1)

Two Sides of the Same Coin Win 10 times.

Speedy Rexecutioner Destroy the Metal Gear REX boss in under 2 mins 30 seconds

Ace Port Royal Ace Port Royal

An Ancient Antiquity Do hard time.

Easy Come, Easy Go Steal the Arasaka medical truck or deliver 10 vehicles to El Capitan.

Judge, Jury and Executioner Defeat 10 psychopaths

Justice Served Complete Overtime Mode

I Rule This Kingdom Escape Vaas’ mind with a score of at least 25,000

Bridge Building Complete all test chambers in the Hard-Light Surfaces co-op course

Dear Diary Collect all of Vaas' Diary Pages

A Memorable Performance Earn a Gold Rating in a Multiplayer Match

Narbacular Drop Place a portal under your co-op partner while they are gesturing

Overclocker Complete Test Chamber 10 in 70 seconds

Masquerade Have 10 zombies with masks on at once

Thrifty Painter Complete Act 3: The Mission firing less than 125 paintballs

Puff, Puff, Vaas Collect all of the Vaas Chibis

Not as it Seems Clear Chapter 2, "Crossing Paths."

Confronting the Unknown Hunt your first variant monster.

Indomitable Spirit Earn the right to take on four-star master rank assignments.

So Much For Poetics Collect all of the Visions in Vaas' mind

Epic Tier 4 Engineer Complete the game in Classic Mode.

The Betrayal Severed: Complete Chapter 1

Missing Pieces You obtained Delilah Copperspoon's identity from Thalia Timsh

Ada the "S+"py Complete Separate Ways on Professional mode with an S+ rank.

Tough Guy Collect all combo cards from psychopaths

On Track Complete a tracked challenge in a Multiplayer Match

Master Spy Collect all the Intel documents in the single player Campaign.

Ace Pirate Town Ace Pirate Town

Dark Forest Complete the Dark Forest on any difficulty

Take 'Em All Down Defeat 100 agents.

Successful Launch Kill 10 enemies with the Grenade Launcher in Multiplayer

The Sacrifice Severed: Complete Chapter 2

Survivalist Complete the game in Pure Survival Mode.

True End(ing) Escape Pagan's mind

Air Show Perform 2 aerial gestures before touching the ground in co-op

Remodeler Change your room's interior for the first time.

The Old Everwyrm Earn the right to take on five-star master rank assignments.

Interior Decorator Have 50 different types of room decor to choose from.

Ace The Frigate Ace The Frigate

Extinction Level Event Complete Special Operation: Mesozoico on Mastery 3 difficulty

Experienced Rider Use Raider Ride many times.