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The Watcher Defeat Algos' first form

Scanned Alone Stand in a defective turret detector

Dual Pit Experiment Do the same test twice

The Modfather Unlock 3 Pro Mods in Multiplayer

For the Night is Dark Endurance Co-op Challenge: Clear 3 Enemy Camps at night in a single expedition

Teamwork Endurance Co-op Challenge: Warm up from freezing by standing next to a campfire lit by your partner

Communication Skills Endurance Co-op Challenge: Kill 5 enemies that have been marked by your partner

Tunnel of Funnel Master the Excursion Funnel

The Part Where He Kills You This is that part

Lunacy That just happened

Fruit Fighter Shoot a background UFO in Future Tense.

Alone Time Endurance Co-op Challenge: Spend at least one day more than 60 meters apart

"Teamwork" Endurance Co-op Challenge: Collect an Artifact while your partner is down

Undertaker Unlock 50% of the Krypt

Get Away from Her! Endurance Co-op Challenge: Kill an enemy melee attacking your partner

Quick Off The Mark Perform a maximum Start Line Boost.

High Five Celebrate your cooperative calibration success

No One Left Behind Endurance Co-op Challenge: Revive a player 3 times in a single expedition

Queen Anne’s Revenge Playing as Blackbeard, perform an acrobatic kill and a gun kill in less than 10 seconds.

Let Me Introduce Myself Finish an online race.

Networking Find every Jack Spot

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

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

Complet-ality Perform 1 of each type of "-ality"

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

Good Listener Take GLaDOS' escape advice

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

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

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

No Hard Feelings Save a turret from redemption

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

Zero To Hero Win an event in Eddie's Car

Drop Box Place a cube on a button without touching the cube

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

Got to Smash Them All Smash every Billboard

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

Sacred Land Playing as The Jaguar, be the highest scoring player of a Domination game session.

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

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

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

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

Cannonized Obtain a Bronze, Silver, or Gold medal in Score Attack for The Sixth Seal Challenge Tomb

Go Fish Obtain a Bronze, Silver, or Gold medal in Score Attack for the Slayer's Gauntlet Challenge Tomb

Chak Attack Obtain a Bronze, Silver, or Gold medal in Score Attack for the Mother Protector Challenge Tomb

Offshore Count Obtain a Bronze, Silver, or Gold medal in Score Attack for the Zipacna's Craving Challenge Tomb

The Gatecrasher Break through every Security Gate

Slingshot Pro Perform 100 Team Slingshots. (Across all Game Modes).

Team Building Complete all test chambers in the Team Building co-op course

Adventure Besties Endurance Co-op Challenge: Escape the forest with 5 Medium and Large Artifacts