Throw the specified Darkdeath item into the spring that randomly appears inside the dungeon. Note: The spring often appears at Mid-Tier Hero Mastery Cave. You can only use one spring for each piece of equipment, however there is a chance that the item will not be returned.
EQUIPMENT - HOW TO UNLOCK G-Darkdeath Body - Throw Darkdeath Body into a spring. G-Darkdeath Head - Throw Darkdeath Head into a spring. G-Darkdeath Left Arm - Throw Darkdeath Left Arm into a spring. G-Darkdeath Leg - Throw Darkdeath Leg into a spring. G-Darkdeath Right Arm - Throw Darkdeath Right Arm into a spring.