Oreight

Skillful Raider Endurance Challenge: Open 5 Codices or Sarcophagi without getting caught in a trap

Elevator to the Gallows Kill a player using a lift that has been trapped with Booby Trap.

Undertaker - Kill 1000 Helghast Kill 1000 Helghast soldiers

Echoes of the Furious Obtain a Bronze, Silver, or Gold medal in Score Attack for the Forge of Destiny Challenge Tomb

The Take Greedy bastard. You accepted O'Malley's blood money and let him go.

Medic!  Revive your Co-Op partner 10 times.

The Explorer Complete all optional missions.

Teamplayer You killed 5 opposing team members.

Carpe D.I.E.M. In Die Maschine, free the lost Decompressive Isotopic Estrangement Machine.

Percolate Solve all Stashes
0/6

Licensed Properties You collected all 10 Night Springs video games.

Extraction In the "Destroy the Anti-Air Emplacements" Side Op, rescue and extract all prisoners via chopper

Duke or Dimwit? Defeated all waves in Duke and Dimwit Theater.

Hangar 18 You found and read the secret message. Now you know too much...

International C License Complete the International C License.

Kevorkian Complex You granted a dying man his final request.

Weedkiller Kill 5 Cysts in the Biology Building with a single poison gas cloud.

Genetically Superior You came first in 20 singleplayer street races.

Master and Apprentice Endurance Co-op Challenge: Escape the forest after surviving 10 days with at least 20 Artifacts

Taffer's Delight Completed Burial at Sea - Episode 2 in 1998 mode.

Preemptive Strike Playing as The Orchid, block 10 abilities from opponents with Sabotage.

Destroyer Complete 1000 sabotages.

Float Like A Butterfly Obtain a Bronze, Silver or Gold medal in Time Attack for the Path of Huracan Challenge Tomb

Murderer and Victim Speak with Dylan

Weird War Tales Defeat 15 enemies using any type of hacking.

Used Brimshine Used Brimshine to purchase 1 outfit and 1 weapon.

Elite Complete all missions with an S rank.

Good Listener Take GLaDOS' escape advice

All Quests Completed Completed all main and side quests in the Burning Shores.

Bomb Squad Defuse all bombs in 3 minutes or less

Cauldron THETA Core Overridden Reached the Core of Cauldron THETA and accessed its information.

Rope-a-Dope In CitC, knock an enemy around the city with Undertow, then knock him off the edge of the city.

Hard Work Solve the passwords for all locked computers
0/5

A Few New Tricks Use 5 different Quickfire gadgets in one fight as Robin in Harley Quinn's Revenge

Freeroamer 2 Reach 100% complete in 100 locations.

Rooftop Ruffian Defeated all waves in Raven's Dome.

Howl Long Obtain a Bronze, Silver, or Gold medal in Time Attack for the Howl of the Monkey Gods Challenge Tomb

Sting Like A Bee Obtain a Bronze, Silver or Gold medal in Score Attack for the Path of Huracan Challenge Tomb

Rollover Total a car by flipping it over.

Go Cart Obtain a Bronze, Silver, or Gold medal in Time Attack for The Sixth Seal Challenge Tomb

Killed Bileguts and Stingspawn Killed 5 Bileguts and 50 Stingspawn.

Museum Curator In CitC, unlocked all Gallery items.

Missile Defense System In CitC, killed an enemy with splash damage by shooting a rocket out of the air.

Organ Grinder Obtain a Bronze, Silver or Gold medal in Score Attack for the Howl of the Monkey Gods Challenge Tomb

Whirls of Color Stun a Painted enemy with a Flashbang

Rapids Obtain a Bronze, Silver, or Gold medal in Time Attack for the Slayer's Gauntlet Challenge Tomb

First Versus Beat another player in an online versus match.

Zip It Obtain a Bronze, Silver, or Gold medal in Time Attack for the Zipacna's Craving Challenge Tomb

Explorer You found 25 hidden cages.

Chel Game Obtain a Bronze, Silver, or Gold medal in Time Attack for the Mother Protector Challenge Tomb