Retrieval (requires Mass Effect 3: Rebellion Pack): Retrieve two high priority packages and securely transport them to a designated extraction zone on each map.Additional players within the hacking zone quicken the process. Hacking: Capture and hold a position in order to hack critical data before time runs out.

Health, shields, and/or barriers are increased. Each target enemy will be stronger than the normal multiplayer version of the enemy.Assassination: Take out four targeted enemies in sequence.

The only way for a player to self-cancel the disarming of a device once they've started is to move a short distance in any direction, or even side to side rapidly.

Most player classes disabling a device automatically crouch down and also become slightly more resistant to stuns such as from the melee attacks of lesser enemies, but being fully stunned or staggered will interrupt the disabling process.

Only one player is needed to deal with a single device, but it is possible for more than one player to work on the same one, which can be insurance in case one player is interrupted.

A player working on a device is unable to act in any way for 10 seconds, but it is possible to activate powers such as Tactical Cloak prior to beginning.

Devices: Enable or disable four key devices in sequence.

There are five types of objectives that are chosen randomly at waves three, six, and ten: Towards the end of a wave when only a few enemies remain, those enemies tend to become more aggressive. Players must survive the first ten waves by eliminating the enemy forces while also accomplishing objectives for the mission to be successful. Platinum also features enemies from factions other than the one chosen. (Platinum difficulty was added by the Mass Effect 3: Earth DLC pack.) Higher difficulties feature stronger and more numerous enemies, as well as difficult enemy types in earlier waves and in larger numbers, but will also reward more credits to spend in the Store and more bonus experience for successful completion. Missions have four challenge difficulties, in order from easiest to hardest: Bronze, Silver, Gold, and Platinum.

Missions in cooperative multiplayer consist of pitting the player and up to three other allies against eleven waves of enemies consisting of Cerberus, Reaper, geth, or Collector (requires Mass Effect 3: Retaliation) troops on various battlefields throughout the galaxy.

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