Walkthrough
Chapter 4: Dark Descent
Chapter 4 runs through Caverns. Here is the objective, the Lanterns you will use and what is worth doing before the chapter ends.
Confirmed facts on this page carry their sources.
Use the Cave Grotto Key to enter the Caverns and collect Louis' samples; Sphinx closes the chapter and has two health bars.
Chapter card
| Field | Details |
|---|---|
| Chapter number | 4 |
| Name | Dark Descent |
| Regions | Caverns |
| Boss | Sphinx, Devourer of the Unworthy |
| Unlocks | Stasis Transmutation, Blunderbuss |
| Quests here | Homesick |
Lanterns
| Lantern | What it is for |
|---|---|
| Last Sunlight | Checkpoint, fast travel, level-up and Amber swap point. |
| Weeping Ledge | Checkpoint, fast travel, level-up and Amber swap point. |
| Old Mine | Checkpoint, fast travel, level-up and Amber swap point. |
| Mine Cart Route | Checkpoint, fast travel, level-up and Amber swap point. |
| Ancient Lair | Checkpoint, fast travel, level-up and Amber swap point. |
Order of work
- Enter Caverns and take the first Lantern you pass; it becomes your respawn point for the whole chapter.
- Push the story objective while sweeping the side routes as you pass them; quests here are usually started by picking up a note or a body.
- Before the boss, do one pass for the Ambers, flask upgrades and quest steps you have already walked past.
- Finish the boss, then check the chapter's return gates below before leaving the region.
Before you leave
- The Ancient Lair is revisited in the finale; the first-drop route matters if you want to re-clear picks.
- Quests whose later steps sit in this region will not move until you come back for them.
- Nothing here is permanently missable, but routes get longer once the Lantern network moves on.
FAQ
FAQ
Common questions about this topic.
What happens in Dark Descent?
Chapter 4 follows the story objective through its region and closes on the chapter's boss encounter, if it has one.
Can I come back to Dark Descent later?
The Ancient Lair is revisited in the finale; the first-drop route matters if you want to re-clear picks.
Which region is Dark Descent in?
Caverns, which is documented on its own region page with the full Lantern list.