Revive a partner in Co-op.

In order to get this achievement you must revive a partner in co-op.

1. Start by entering a co-op mission, they can be found around the map and are represented by a brown/orange icon.
2. Once you locate one do it and invite a friend.
3. Once in this mission get your friend to provoke a group of enemies and not fight back.
4. This will cause him to go down and need to be revived. Once he is down go over and kill all the enemies or drop a smoke bomb.
5. Then hold B to revive him. Once he is up you will get your achievement.

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Make sure you have a friend who you can play with as it will save alot of time, as otherwise you would have to wait for a person to go down in an online match.

If you need any help feel free to PM me.