Please be as specific as possible when letting us know what is missing or incorrect. For example, say "this game's trophy difficulty should be 8/10", with a link to a website corroborating this difficulty estimate (if possible), not "this game's trophy difficulty is wrong".
Pure, unbridled savagery. The Berserks have no strategy and no tactics other than the frenzied assault of their blades accompanied by their screaming bloodlust. Wounding their enemies in combat drives them into a greater frenzy and restores their health. Eliminate them to earn an Epic Rune.