The achievement description states:
Complete all test chambers in all courses of co-op.
Can this be completed in split-screen to unlock this achievement, or does it have to be done over Xbox Live?
Xbox – unlock the “You Saved Science” achievement in split-screen co-op
achievementsportal-2xbox-360
Related Topic
- Xbox – Is the “Sage” (get all books) achievement broken in AC:R
- Borderlands – Is the “Challenge Accepted” achievement broken
- Switch split screen game views in Portal 2 PTI
- Xbox – Black Ops 2 Split Screen with sidebars issue
- Complete the achievement for stunt jumps
- Xbox – Problem with Xbox Live Split screen for COD ghosts
- How to unlock the “Drift King” achievement in Rocket League
Best Answer
This achievement, along with most other co-op achievements in Portal 2, can be obtained from either split-screen or online play.
The only achievements which require online play appear to be Friends List With Benefits and Professor Portal.