The survivors are plunged into a deadly series of rooms and traps, and must work together to survive! This is actually pretty hard, and you know how bad we are at computer games, so settle in for a bumpy ride :D
Here's the mod: http://www.l4dmaps.com/details.php?file=9773
It should just be a double-click-to-install with the new steam workshop stuff, so have fun!
● Yogscast Gear: http://yogscast.spreadshirt.co.uk/
● Facebook: http://www.facebook.com/yogscast
● Twitter: http://www.twitter.com/yogscast
● Forums: http://yogscast.com/forum.php
● Podcast: http://itunes.apple.com/gb/podcast/the-yogpod/id304557271