Launch Specter on Roblox and wait for the game to load. On the main menu, you'll notice several options at the top of the screen. Select "CODES," which is one of the rightmost options.

To get the Abyssal Specter Rod in this Roblox title, you will first have to enter the Atlantis area. Reaching the said area isn't simple, as it requires you to complete a handful of steps beforehand.