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RSGOALS · RS3

Core Problem

Core Problem is a members achievement in the Combat category (Corporeal Beast), worth 10 RuneScore points. It has no requirements.

In game: “Defeat the Corporeal Beast without being hit by the Dark Energy Core. Can only be completed in a solo instance.”

10 RuneScoreCombatCorporeal BeastMembersMedium combat achievement

Updated . From the RuneScape Wiki's achievement data (CC BY-NC-SA 3.0), checked 2026-10-09. Wiki page.

Requirements

None: any account can do this one as soon as it reaches the right place.

Why it matters

More in Corporeal Beast