| 1 |
|
9.80%
|
Can't Touch This: Dance in front of a turret blocked by a hard light bridge in co-op |
ACH.YOU_MONSTER |
| 2 |
|
4.60%
|
Empty Gesture: Drop your co-op partner in goo while they are gesturing by removing the bridge under them |
ACH.PARTNER_DROP |
| 3 |
|
4.50%
|
Friends List With Benefits: While playing co-op, hug 3 different people on your friends list |
ACH.SPREAD_THE_LOVE |
| 4 |
|
3.60%
|
Party of Three: Find the hidden companion cube in co-op test chamber |
ACH.PARTY_OF_THREE |
| 5 |
|
3.00%
|
Triple Crown: Solve 3 co-op chambers in the Mass and Velocity course in under 60 seconds each |
ACH.SPEED_RUN_COOP |
| 6 |
|
2.80%
|
Portal Conservation Society: Complete Chamber 3 in the Hard-Light Surfaces co-op course using only 5 total portal placements |
ACH.LIMITED_PORTALS |
| 7 |
|
2.60%
|
Talent Show: Never lose a cube in Chamber 6 of the Mobility Gels co-op course |
ACH.SUMMER_SALE |
| 8 |
|
2.40%
|
Still Alive: Complete Course 4 with neither you nor your co-op partner dying |
ACH.STAYING_ALIVE |