This route is a paraphrased checklist from Snilloc’s Steam community walkthrough and the linked map article, checked 24 October 2026. It covers the main progression and weapon task. The attached official trailer is promotional footage, not a step-by-step walkthrough or timestamped demonstration.
Main quest route
- Pick up the starting canister and reach the Basement Furnace. Destroy the gas fans before remaining in the purple-smoke room, refill the canister and reconnect it at the Grand Hall supply.
- Find, refill and reconnect the three additional canisters. Activate the teleporter and visit the Library.
- Interact with the Howler chest, defeat the spawned KillerWatts and buy Howler. During a Dark Wave, read the codes in the Manager’s Office and Basement Kitchen Storage and use Howler on the corresponding wall heads.
- Use the upstairs destination computer. In Theatre, assemble the rat using the right eye (Theatre), left hand (Reception), jaw (Basement Storage), left eye (Basement Room) and right hand (Library). Feed it KillerWatt energy to earn a punch card.
- Visit the Void and complete its moving marked-area challenge for another punch card. This branch is required and was missing from the earlier summary.
- In Labyrinth, activate and escort the lamb, making two rounds of copies until four lambs reach the exit. Keep track of the route back to the pad.
- Insert the cards at the computer and complete its wait step. Select the Second Floor Great Hall destination for Isaac. Avoid the purple gas and electrical hazards.
Common blockers and weapon access
The community walkthrough requires the Void card as well as the Theatre and Labyrinth cards. Restore and select the teleporter destinations first; the Howler is used on the codes visible during a Dark Wave. This route summary is sourced, not a claimed completed run.
Hidden objectives and achievements
Normal completion and the hidden objective are separate tasks. For the original four maps, continue after the main quest to earn the corresponding seal. See the God Killer route checklist and the achievement checklist. House and Tides also have their own hidden quests; they do not add prerequisites to the original four-seal unlock.
Official game video
Watch the official video on YouTube: Sker Ritual | Official Story Trailer
Questions people ask
What is a Dark Wave?
Every fifth round the hotel lights go out and the enemies are KillerWatts. That is the Fandom description of the map's signature round.
Where is the Howler?
Teleport to the Library, interact with the chest and defeat five spawned KillerWatts before buying Howler. The wiki room list calls it First Floor Library, so this page uses the destination name instead of a conflicting floor label.
What is the hidden achievement?
Ashes to Ashes. It is one of the four seals used for God Killer.
Sources checked 2026-10-24
- Community walkthrough: The Ashes of Sker Hotel — accessed 2026-10-24
- Community map article and quest sections — accessed 2026-10-24
- Official release announcements — accessed 2026-10-24
Last source check: 2026-10-24.