Spec Ops: The Line
50 Achievements
15-20h
Friendly Fire
Show mercy.
30.0%
How to unlock the Friendly Fire achievement in Spec Ops: The Line - Definitive Guide
go to load screen and load chapter 11 and you get it straight at the beginning !!!
You walk quite a way with him screaming away in the background, then as you get near the Oryx it will pop.
My video shows both choices.
You will move forward and find a character injured on the ground. Your choice will be to either end his life by shooting him, or to walk past and let him die a more painful death.
For this trophy, shoot him in the head.
This trophy will not unlock until the next checkpoint so you'll have to make the opposite choice on a second playthrough.
This is a decision based trophy. At the beginning of chapter 11 you will be given an option to show mercy to Biggs by shooting him, thus ending his suffering. Or you can let him burn and die an agonizing death. This trophy unlocks if you show him mercy and shoot him.
If you need additional information or just prefer visual aids then refer to Unfriendly Fire
At the beginning of Chapter 11, you will come to a point where you see Riggs trapped under a burning vehicle. You have a gun with one bullet. You can either choose to shoot him and put him out of his misery, or you can walk away and let him burn.
For this achievement, just use your gun and fire the one bullet into his head, instantly killing him. You can reload checkpoint and get the other decision or wait for your 2nd playthrough of campaign.