Obstacle Building Achievement in Portal 2
Obstacle Building
15Complete all test chambers in the Excursion Funnels co-op course
How to unlock Obstacle Building
This can gained in either split-screen or over XBL.
These are a total of 8 chambers you play in this coop course. Simply go through them and once you reach the end of the 9th chamber, the achievement will unlock once you're back at the HUB.
First unlocked by
Recently unlocked by
- Mar 25, 2024 12:38 AM
- Feb 17, 2024 07:13 PM
- Feb 17, 2024 07:13 PM
- Feb 04, 2024 05:12 PM
- Jan 13, 2024 01:09 PM
Friday, April 22, 2011 @ 04:20 AM
Monday, March 10, 2014 @ 05:21 PM