 There are checks to ensure participants have equivalent weapons and armour to the host to prevent mismatching, and story missions are marked for players who have yet to reach them in their version of the game.In the game's co-op mode, up to four players connect through the Wii's wi-fi system, and can prepare for missions together using an in-game lobby.During gameplay, players coordinate and communicate through shouts triggered using the Wii Remote's D-pad, and in-game alerts if a character is low on health.