Shovel Knight: Specter of Torment is a stand alone campaign or a free expansion for Shovel Knight: Treasure Trove. It features Specter Knight's campaign, which is set as a prequel to Shovel of Hope and Plague of Shadows. The expansion also included challenges for Specter Knight, Body Swap Mode and the Co-op Mode (meaning players no longer require an amiibo in order to play).

Notably, unlike Plague Knight in Plague of Shadows, Specter Knight's play style is very different from his boss fight. The levels are also heavily altered from the Main Story Line, Shovel of Hope.