Borderlands 2
69 Achievements
1,625
63-84h
Friendship Rules
Revived someone from "Fight for Your Life!" that is on your friends list
10
How to unlock the Friendship Rules achievement in Borderlands 2 - Definitive Guide
Now for the coop bit you can either do this over xbox live or locally so long as the accounts that you're reviving are on your friends list, both of you need to have friended each other and not just one of you has friended else you're just a follower of that account.
Obi Jase has commented saying that the accounts should only friend each other and not have them set as a favourite. DoonDoons recommends that both of you need to be showing as online as well, just in case.
Here's a video using 2 controllers (Using gameDVR)
Phone version with pop for odiedodie
No achievement popping in your video is not promising >_>
To begin, make sure you have a friend on your PSN Friend list that owns the game as well as you owning a copy of the game too. From there, either start a co-op game or join him or her in a game of their own or vice-versa.
At some point in the game, it doesn't matter what enemy you face, if they take out your shield energy, along with your life energy, you will enter what's called "Fight For Your Life!", a second chance at killing someone and gaining a second wind. If they cannot get out of that jam, then it's up to you to revive them fully.
When a friend of yours gets into that stage, make sure you are standing or crouching near them and hold down . A green lifebar will appear and it will take at least ten-fifteen seconds before you fully revive them. Once you have revived them from "Fight For Your Life!", they should get back up and the trophy should unlock right then and there!
According to TheWolf, it's also possible to get this trophy on your own on split-screen with two PSN accounts activated on the same console, as long as you have two controllers.
Have fun and good luck!
This can be boosted very early on in the game. First things first, you'll need someone on your friends list who is playing the game and willing to join your game or you joining theirs. If you don't have anybody, please go HERE.
Once you've got a partner and are in a game, you'll now need to find an enemy. Going into "Fight for Your Life" mode is kind of like "Last Stand" in Call of Duty. When your health is depleted to 0, you'll die but go into "Fight for Your Life". Being in this mode, you can only crawl at a slow pace but you can still shoot your weapons. If you manage to kill an enemy before the new health bar is depleted, you'll be brought back to life and get your "Second Wind". But for this achievement, you don't want to do that.
Once you've found an enemy, either you or your partner stand there and let it kill you. Now have either yourself or your teammate walk up to each other and you'll then be prompted to press and hold to revive. Doing so will bring them back to life (when the green bar is full) without them having to shoot and kill someone and the achievement will unlock. Just make sure you revive them before their health bar runs out, otherwise they'll die indefinitely and respawn away from the fight.
*This can also be done with a second silver XBL account. Simply log them in, and then continue to follow the description above.