Shovel Knight: Specter of Torment

MISSABLE

The important thing to note is that you must get them from the Wisp chests in the stages. If you purchase any at all from the NPC, Missy, in the Tower, it will void this trophy/Feat for the entire run. You will need to start a New Game from scratch and try again.

If you don't collect one of the Wisps on your first time through a stage, don't worry. You can replay the stage as many times as you like until you find it. Most Wisp chests are in a secret room that you need to break a wall to get access to but some Wisps, like the ones in the King Knights, Propeller Knights and the Plains stages, are actually out in the open. These are usually not too difficult to get to but some can be acquired much easier by the use of curios like the Hover Plume or the Judgement Rush curios (see Spec'd Out).

Here is a link to a playlist containing videos that show the locations of the Wisp Chests in every stage: LINK