The multiplayer features local competitive and cooperative play and lets you trade gear and soldiers with other players. Versus play options, which support up to six players, include the requisite team deathmatch and base defence modes, which are fun if not remarkable additions. This is a game primarily built on stealthily outsmarting AI characters, and it doesn't shine to its fullest extent in player-on-player combat. There are fully customisable rule sets and loadouts, though, and a good number of environments to do battle in.