Chapter I milestones and story questions
Sphere and vortex achievements identify milestones, while Odyssey and Ad Astra have separate collectible and distance goals. The Weather Update reports an Odyssey progress fix.
Chapter I launched on September 30, 2026. If you are deciding whether you have reached a story milestone or are still chasing an optional achievement, separate those two goals before replaying a route.
What the achievement names tell you
| Achievement | Stated objective | How to use it |
|---|---|---|
| Birth | Power up the Sphere | Identify a Sphere-related milestone when comparing your progress or reporting a blocked route. |
| Let The Tempest Come Strike Harder | Face the vortex and survive | Identify the vortex encounter separately from the Sphere. |
| Odyssey | Find all Calypso 5 | Track the complete collectible objective rather than treating one pickup as completion. |
| Ad Astra | Fly 10,000 km | Treat the distance target as its own achievement goal. |
These objectives are not a list of named endings. Their completion rates also do not establish a mandatory sequence or the number of story branches. In particular, an achievement for dying to the Sun does not make death a required walkthrough step.
Odyssey not progressing after collecting Calypso 5
The October 21 silent patch fixed an Odyssey progress bug, as reported in the October 26 Weather Update. Update before repeating a long collectible search or assuming a collected item was the wrong one.
The announcement does not promise automatic retroactive unlocking for every affected save. Keep your existing save and note which collectibles you found if progress still fails; deleting a save or restarting the whole chapter is not a stated requirement of that fix.
Sphere and vortex problems are different from ending choices
If you are stuck leaving the Sphere, check the October 1 exit-softlock fix. If a terminal or radio task blocks you, check the October 8 transmitter-file fix and removal of the radio maths puzzle. Those are technical or quest changes, not evidence that you selected a different ending.
Use the walkthrough's location and symptom checks before replaying large sections. Keep the district, entrance and current instruction in your notes so you can distinguish the same blocker from a new story step.
Chapter I and later story updates
The developer describes later chapters as updates to the base game rather than separate DLC purchases. That release plan does not by itself guarantee future save compatibility or establish which story decisions will carry over.
The store's question about burning the Grove is part of the story premise. It is not an instruction to select an ending from a named menu. Follow the choices and instructions actually presented in your current chapter, and keep achievement cleanup separate from assumptions about a later chapter.
For the setting and named places, see story and world. For hazard preparation and current controls, use the beginner guide.
