⚠ Couldn't save your checked state (storage unavailable in this view). Checks made now will be lost if you close this page.
Manual Backup (works everywhere)
Export a code after checking things off, save it somewhere (Notes app, message to yourself). Paste it back in next time to restore your progress — no auto-save required.
Pulled directly from your Steam achievements export. All main-campaign achievements are done — everything below is what's left, grouped by where you'd go to get it.