Force Core (Highest)

Introduction
A comprehensive list of cores can be found here. Force cores are mainly used for socketing options in empty slots, more info can be fond here. Other types of force cores are as follows:
 * Force Core (Low)
 * Force Core (Medium)
 * Force Core (High)
 * Force Core (Highest)

Obtained

 * Field: Mutant Forest, Pontus Ferrum, Porta Inferno
 * Dungeon: Forgotten Temple (B1F), Forgotten Temple (B2F), Forbidden Island, Altar of Siena (B1F), Altar of Siena (B2F), Illusion Castle Underworld, Illusion Castle Radiant Hall
 * DX Dungeon: All DX Dungeons
 * Chaos Arena: Chaos Arena Lv. 3, Chaos Arena Lv. 4, Chaos Arena Lv. 5, Chaos Arena Lv. 6