"Heal 10% from picking up ammo drops."
Survivalist heals players, and when fully upgraded, gives them extra energy when they pick up an ammo drop. This is a Secondary Perk.
Upgrade 1: +5% heal from drops
Upgrade 2: +5% heal from drops
Upgrade 3: +40% energy recharge from drops
This perk is useful for players who enter into extended combat with enemies, and can quickly grab extra energy and health from a dead player. When combined with the Looter perk, players can extend their combat time.