Spoiler warning: This page discusses ending-related game text and achievements. Specific details are folded below.
What is confirmed?
The developer’s launch announcement says the full game contains three separate endings. The earlier progress update describes ten main layers, a shorter eleventh layer and an optional bonus ending sequence. It does not supply a complete route, requirements or a mapping of every ending to an achievement.
The 1.0 settings text describes Endless mode as looping layers until death and says the game cannot be beaten with that setting on. If you want to pursue an ending, check your run settings before starting. Character-select text says finishing a run with the previous character unlocks the next; it does not identify which outcomes qualify, so we do not infer that every death or ending unlocks a character.
Show ending-related official text and achievement spoilers
The 1.0 locale contains a scene in which the character reaches the surface, boards a pod and is taken to a facility. The text alone does not establish all steps needed to reach that scene or which ending it represents.
Steam’s achievement list includes “Company’s Worst,” described as obtaining freedom, and “Pacifist,” described as killing no guards during an escape sequence. Steam also lists “To Be Continued...” with a catastrophic mission failure description. These descriptions do not by themselves establish a full walkthrough or prove that each corresponds to a distinct ending.
What remains unverified?
We have not independently tested the prerequisites, branching choices, item requirements, order of events or outcomes of the three endings. Avoid treating a demo guide or a community route as verified 1.0 instructions. The achievements page labels uncertain metadata, and demo versus full game explains the release additions.