3 0 0Actions Report Solution You need to clear out all enemies in 14 ambush camps to obtain the 'Ambush Camp Hunter' trophy.Here is a video with all 14 locations. Credits to PowerPyx.
1 1 0Actions Report Solution Ambush camps are found in set places on the map, unlike marauders camps, you can find them as a red symbol (looking like the trophy picture). Exploration is the only way you'll find them, on rare occassions, they appear as Blue Question marks for you to follow and you can follow clues using Survival instinct.