Sunday 5-Sep-2010 8:34 PM Eight minutes of Valve's two-player PAX demonstration, and some screenshots
Valve has released a bunch of cinematically composed co-op screenshots fresh out of the PAX show underway this weekend.
Meanwhile, lucky attendees have had their cameras pointed at a co-op gameplay demo, in which Valve shows off the Ping tool - a waypoint market that enhances player communication - and several other clever co-op gameplay mechanics.
Valve also promises that the co-op and single-player campaigns will both each be longer than the first game's campaign was. And hearing that makes us very happy people.