Sony has revealed a lot more details on Killzone: Mercenary, which was announced for Vita at Gamescom last year. Developed by Guerrilla Games, the game will be coming on September 17, and will be set just after the end of the original Killzone.

According to the PlayStation Blog, the player will be cast as former UCA soldier Arran Danner, a merc faced with some tough choices after a mission he is sent on goes awry. The game features nine hour-long missions in single-player, with multiplayer having supporting up to eight players and three different game modes, including Warzone.

Check out the new trailer below for some gameplay. You can expect more details as soon as we have them.