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Only Skill Slot 4 can be used
The Skill Count of Skill Slot 4 fixed at 1
The skill in Skill Slot 4 gains Skill Damage equal to (Total number of skills before reduction (Maximum 10) x Number of disabled stars x 10)
If all skills from the Slot 1 to Slot 6 have been specially modified, Skill Damage is amplified by 60%
Equip Gunner (Character) with the 'Sentry Gun-Minigun' (Weapon) and perform a special modification on the Rampage (Subskill).