While some biomes like the Derelict Citadel (Biome 3) have static set pieces, most of the environment shifts with each run.

This sequence provides the "car keys," an item used after defeating the final boss, Ophion, to unlock the true ending. Narrative and Psychological Themes

While most equipment is lost upon death or completing Biome 3, permanent tools like the grappling hook and translocator stay with the player. Unlocking Act 3 and the "True Ending"

Returnal blends fast-paced combat with third-person shooter and roguelike elements. Players control Selene Vassos, an astronaut trapped in a time loop on the hostile alien planet Atropos. The Cycle: Every death sends Selene back to her crash site.

After gathering the fragments, you must visit Selene’s house in either Biome 1 or Biome 4 to trigger the final narrative sequence.