The Betrayer is a music from the Shovel Knight soundtrack. This is the battle theme of the Remnant of Fate and a fast-paced and upbeat reprise of The Possessor. It is Music Sheet #44 in Shovel of Hope and can also be listened to in Sound Test after completing the campaign once.
Music Sheet #44 and can be found in Tower of Fate: ????, in the room far left from the bottom of the pitch black room with invisible platforms.
"With the amulet shattered and the Enchantress subdued, the true evil is exposed."
- "Bard: Let's see here... Oh, you found "The Betrayer"! So, helpful tip for my fellow bards: never accept amulets as payment. Trust me. Don't."
- The Bard's dialogue references his line about the theme The Possessor, where he said he was paid with an amulet.