Join Uncle Gravy and RuuNuu as they work there way through multiple puzzles, HiFive each other and laugh at each other's death.br br This is the Co-op campaign of Portal 2 for PC.br br Uncle Gravy is now on Twitter, Follow me @ www.twitter.comUncleGravybr br My Co op partner channel - br Please like and subscribe, the more viewers and subscribes i get, the more comments i get with feedback.