The Berserk Hunter is extremely fast with powerful melee attacks. The only way to successfully fight it is to use the Helltime power of the Artifact to slow it down and shoot it while Helltime is active. After so much damage, the creature will become invulnerable, throwing large fireballs. After this fireball fury, Berserk resumes its melee attacks and is once more vulnerable. The uncovered heart while berserk seems to be the weak point.
Upon death, the Berserk power is attained by the Artifact. Acting like a much more powerful version of the berserk pack item or the Berserk artifact, users of this ability can punch hard enough to kill almost any creature with one punch, the force sending them flying off their feet.