When you encounter a Strike Team mission in the Single-Player mode, you can leave your Strike Team at their base and decide to tackle the mission yourself with your Multiplayer roster of characters. You also have the option of tackling the mission by yourself, or recruiting up to three friends to play with you. The more friends you bring, the greater the challenge and the greater the reward. These missions will play out using the Next Mass Effects multiplayer Horde mode (more details on this later). These missions will include a variety of thematically appropriate objectives, like defending a Settlement against Khet attacks, or recovering a Remnant artifact off of a planet before an outlaw gang gets there first. By taking an active role in strike team missions, you can earn special Single-player rewards in addition to the usual multiplayer specific characters, weapons, weapon mods, and pieces of equipment which can be customized between missions. Additionally, players who join another persons Strike Team mission will receive bonus in-game currency and multiplayer XP for helping others with their missions.