A Silksong double jump is indeed a power you can unlock tied to an item and ability called the Faydown Cloak. However, this cloak won't be accessible in Hollow Knight Silksong until quite far into the ...

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Looking for a full list of all of Hollow Knight: Silksong's bosses in order? Hornet's quest in Hollow Knight: Silksong will see her face a whole mess of insectoid beasties in a kingdom ruled by silk ...