PUBG: BATTLEGROUNDS

I managed to get this to unlock on the Erangel map. I've played Sanhok loads and it would not unlock for me.

This can be earned in Duo's, 2 Man Squad, 3 Man Squad or 4 Man Squad.

To revive a downed teammate they need to be downed either by another player, falling off a high ledge or jumping out of a moving vehicle. (not sure if downing your own teammates count)

Then press the button when looking at your teammate to revive them, it takes 10 seconds to revive someone.

This achievement cannot be obtained in Solo and can only be obtained in Duos or Squads mode. When a player's health has been fully depleted in Duos or Squads, they will go into a knocked out state instead of instantly dying, which is what happens in Solo. When this happens, their teammates have the ability to revive them. To revive a teammate, walk up to them while they're knocked out, and press to start the revive. Reviving has a cast time of 10 seconds, and if you or your incapacitated teammate move, it will interrupt/cancel the revive. Be sure that you and your teammate are in a safe and secluded spot before going for a revive.

This achievement will come naturally just playing the game, but if you're looking to get it quickly, either have your teammate purposely incapacitate themself with fall damage, vehicle damage, or a grenade, or you can down your teammate yourself with friendly fire and pick them up right after (the latter is actually how I unlocked the achievement, so I can confirm that this method works.)

Enjoy the relatively easy 10G!