This article is a stub. You can help Dr. Brain Omnipedia Wiki by expanding it. The Certificate of Achievement is an inventory item in the Castle of Dr. Brain. It is a coupon. Retrieved from "https://drbrain.fandom.com/wiki/Certificate_of_Achievement?oldid=3996" Categories: Article stubs Inventory (DB1) Add category Cancel Save Community content is available under CC-BY-SA unless otherwise noted.