Portal 2 achievements

Collected all other Portal 2 trophies

Complete Course 4 with neither you nor your co-op partner dying

Never lose a cube in Chamber 6 of the Mobility Gels co-op course

Solve 3 co-op chambers in the Mass and Velocity course in under 60 seconds each

Complete Chamber 3 in the Hard-Light Surfaces co-op course using only 5 total portal placements

Never lose a cube in Chamber 6 of the Mass and Velocity co-op course

Find the hidden companion cube in co-op test chamber

Break 11 test chamber monitors

While playing co-op, hug 3 different people on your friends list

Complete Test Chamber 10 in 70 seconds

After completing co-op, complete Calibration Course online with a friend who hasn’t played before

Drop your co-op partner in goo while they are gesturing by removing the bridge under them