The adventuring Achievement Hunters find themselves alive and on a roof. It's getting off the roof that will prove to be the tricky part. In today's episode: Jack teaches Geoff how to build a bunker, while Ryan, Jeremy, Michael, and Gavin try to survive Achievement Station. The adventuring Achievement Hunters find themselves alive and on a roof. It's getting off the roof that will prove to be the tricky part. In today's episode: Jack teaches Geoff how to build a bunker, while Ryan, Jeremy, Michael, and Gavin try to survive Achievement Station.