GRW....

The challenge hasn't changed since the last time I did it. The third part is still a massive PITA. the guards and target spawn at 22:00 at night in the little chapel in the town beside the old witches hut.

As before I separated/distracted the guards cleared and sniped the area. Getting down to usually one guard left, that when taken out of the way spooks the target and he runs for it. He runs to a vehicle to get away. There are too many cars around to pre-disable so it's better to get close to a car he's in by shooting it till it becomes damaged enough for him to exit. He still carries a powerful handgun, he does a one shot kill kind (with damage at the level of difficulty needed by the challenge).
To get close to him flash-bang grenades are the best. He does try to get to another vehicle. Many, many, flash-bangs to be sure to be on the safe side. Get up close, grab him, take him to the hut up the hill and knock him out(kill) in the middle of the room/shrine. 

So with the challenge completed the reward crate gave it's three rewards.

The 3* Generals helmet is good but not one I'd use, the same with the gladiator patch. But the Unidad APC is a great reward. I really like it and it's camo. But to have it as a spawnable vehicle now available on all my characters is such a great reward! That makes it all worthwhile. More crates please!