Alliance of Valiant Arms added their new co-op mode and features in the latest update on September 9th.   If you need to know the goods on it, we had a preview of it here.  In addition to that coverage we have a brand new trailer showcasing the mode, which you can see below.

Alliance of Valiant Arms is a free to play first person shooter on the PC by publisher ijji. Launching this week is the game's next co-op mode called Death Valley. This unique mode will challenge players and give the chance to earn some unique goodies. We have the exclusive first look and screens