Graveyard Shift is an achievement in Plants vs. Zombies: Garden Warfare. The player has to beat a Super Vampire Wave in Garden Ops. It was added in the Suburbination DLC when Baron von Bats and his minions were added in the same update.
Graveyard Shift can be hard to get because of Baron von Bats's constant teleporting, so it is recommended to use at least one Chomper because it can use its Goop ability or instead use a Goop-shroom as an alternative if Chomper is not available. If you get this achievement and have not gotten the Sunblock achievement, there is a good chance that you will earn that achievement as well. Another reason this achievement is hard is because the chances of getting a vampire super wave is extremely unlikely. Agent Pea can work well but try to land critical hits more often to vanquish the bosses more easily.