With less than 5% health, hunt an attacking predator that is less than 2 meters away, can be obtained on DRY RIVER single player level. Right after you get you weapons (rifle & shotgun), go up to the narrow balcony and let the jackals take your health down to a sliver. Then fire your shotgun and kill 1 of them. Because you are in that narrow part, the animals will always be within 2 meters of you.