Quick answer
Steam and Exophase currently expose 22 achievements. Use the live account list as the checklist of record, then classify requirements instead of attempting every special condition during the first run.
Efficient completion order
- Finish a normal campaign while learning puzzle and resource routes.
- Record progression unlocks that did not appear when expected.
- Group difficulty and modifier conditions into compatible later runs.
- Combine combat or resource challenges only when their rules do not conflict.
- Finish exploration and other cleanup with a current route source.
Global rarity is dynamic and reflects player behavior, not a fixed difficulty rating.
Patch context
Version 1.01 changed completion-achievement checks to account for modifiers. Later patches also fixed collected pins reappearing and retained several known state issues. Update before beginning a long challenge, and restart when the official notes say a difficulty or modifier change requires it.
This page verifies the public count and planning categories. It does not claim a fully reproduced missables list or copy hidden descriptions into an unsupported route.