The blue and orange of teamwork; Portal 2 co-op gameplay

PAX 2010 is well underway, and while many of us are still rejoicing over that one particular thing that happened yesterday, it’s time to move on and get put your mentality at ease.

Yeah, because when you watch the almost 9-minute-long footage below of Valve’s idea of a co-op experience in Portal 2, you’ll realize soon enough that not only will it put your mind to the test, but also your will to not want to bust your teammates jaw when things go down the crapper, which they probably will at one point or another.

It won’t be easy, but then again, it wouldn’t be Portal if it was…