The main content of Hidden Dreams focuses on bringing in "two of Hallownest’s greatest warriors", along with the first major quality of life changes including a new Stag Station and a new fast travel mechanic.

How long is Hollow Knight - Hidden Dreams?
When focusing on the main objectives, Hollow Knight - Hidden Dreams is about 45 Mins in length. If you're a gamer that strives to see all aspects of the game, you are likely to spend around 1 Hours to obtain 100% completion.