Pickup and run rewards
Use Golden Eggs as planned power investment
Direct permanent stat investment toward the character you intend to develop.
A regular Merchant in Moongolow or another stage where available; Eggman in Moongolow for bulk purchases; Moon Guardians for direct drops.
Purchases and guardian drops can be pursued across runs. A Merchant visit is limited to once per run; guardian drops depend on the encounter.
Stop when the chosen character has the investment you planned, or save remaining gold for another goal.
Open a guide to find other locations and see what the item is used for.
Direct permanent stat investment toward the character you intend to develop.