Quick Answer
Everything included
The Arkham Field Kit contains The Anatomist, The Witness, and Heretic Heraldry outfits for Calvin. It also adds three Dream Essence for an early Talent choice and a resource pack containing ammunition, healing, and crafting supplies.
The Holloway Manor is the substantial Premium extra. Official store copy describes it as a haunted-estate story mission with an optional ritual investigation, and the add-on is also listed separately for players who start with another edition.
Premium versus Deluxe
Deluxe includes the base game and Arkham Field Kit but not Holloway Manor. Premium is therefore the straightforward choice only if you already want the story add-on; otherwise Standard plus a later DLC purchase remains possible where the add-ons are sold separately.
The pre-order promise of 24-hour advance access was time-limited to launch. It should not be counted as an ongoing Premium feature after August 18, 2026.
Sources
Facts were rewritten in original English and checked against the following pages. Store values can change after this snapshot.