Redundant organs. Spartans have a number of redundant organs and heal fairly rapidly. They can spend five minutes to heal 2d6 HEALTH once per day.
Regenerate. Every time a Spartan berserker deals a killing blow while frenzied they gain +1d6 HEALTH.
Fearless. While frenzied, Spartan berserkers are completely immune to fear-based abilities, attacks, and conditions.
Berserker. Spartans can enter a berserker rage by tasting their own blood when they are below half HEALTH. This grants them a +1d6 bonus to all damage rolls. The rage only ends when all foes are dead, or the Spartan is rendered unconscious or restored to above half HEALTH. When berserk, they must attack the closest enemy, and move on to the next closest thereafter, using melee attacks only. Each round they rage for, they take 1d6 damage; they do not stop raging until they pass out or until all enemies are dead.