Microsoft also announced that Assault Heroes, an action combat game from Wanako Studios and published by Sierra Online, will be available for download on Xbox Live Arcade for Xbox 360 beginning on Wednesday, December 13, at 1 a.m. PST. In Assault Heroes, gamers take on the role of the only surviving member of an elite special forces unit searching for a secret underground lab. Gamers may take on the mission alone or fight side-by-side with a friend in the two-player cooperative mode. Assault Heroes puts players into a heavily armed 4X4, maneuverable speed boat or trusty military-issue footwear, blasting their way through enemy-infested territory while being assaulted by waves of formidable enemies with unrelenting attacks. New screenshots in our gallery.