Still Alive
Complete Course 4 with neither you nor your co-op partner dying
🎮
Portal 2
Asking for Trouble
Taunt GLaDOS in front of a camera in each of the five co-op courses
🎮
Portal 2
Rock Portal Scissors
Win 3 co-op games of rock-paper-scissors in a row
🎮
Portal 2
Friends List With Benefits
While playing co-op, hug 3 different people on your friends list
🎮
Portal 2
Talent Show
Never lose a cube in Chamber 6 of the Mobility Gels co-op course
🎮
Portal 2
Camera Shy
Detach security cameras from the walls.
🎮
Portal
Terminal Velocity
Fall 30,000 feet.
🎮
Portal
Vanilla Crazy Cake
Beat all six Portal advanced maps.
🎮
Portal
control perfect
Beat all of "control" without hitting a wall.
🎮
Duet
Heartbreaker
Complete Portal.
🎮
Portal
Fratricide
Do whatever it takes to survive.
🎮
Portal
Friendly Fire
Knock down a turret with another turret.
🎮
Portal
Two Racers, One Event
Beat your first Crew Time Trial
Every Trick in the Book
Perform one of every Trick
Known Round Here
Win a League group