Confirm the exact achievement
Open the game’s Steam achievement list and record the exact name, description, and locked state before repeating a long requirement. The official store currently lists 29 achievements, but a count does not verify the hidden conditions behind each one. This troubleshooter therefore focuses on confirmed failure context rather than inventing a rarity ranking or unlock checklist.
Take a screenshot of the Steam state and the relevant in-game screen. Note whether the achievement is hidden, whether progress is displayed, and when you believe the requirement was completed. Do not use a community guess as the condition you report to the developer.
Check Steam initialization
Hotfix 3 identifies a specific past problem: players could find secrets while Steam was not initialized and become locked out of the related achievement. The developer says secret counting was reworked so this should no longer happen. That confirms Steam initialization mattered to at least one secret-counting path before the fix.
Fully exit IGTAP and Steam, reopen Steam normally, confirm the client is online and shows the game, then launch IGTAP from the library. Avoid running multiple instances or switching accounts during the test. This does not guarantee an unlock; it creates a clean Steam-connected state for the smallest safe retry.
Recheck secret counting
If the failed achievement appears related to secrets, first confirm that the game is updated through Hotfix 3. Do not assume an online list’s secret count or condition is current. Load the preserved save after Steam is initialized and inspect any in-game indicator that the current build presents.
Retry only a small, reversible interaction if the game makes one available. Do not delete a save, reset progression, or repeat the entire game solely because an unverified guide says the achievement requires it. Hotfix 3’s wording confirms the counting fix, but the reviewed note does not describe a universal retroactive trigger or exact steps for every affected save.
Preserve saves and logs
Before any extended retry, exit the game and copy the current save candidates, backup saves, and logs into a dated external folder. Use the save backup guide and never overwrite the originals. Hotfix 3 confirms both backup saves and more verbose save logging, making those files especially relevant to a reproducible report.
Record the achievement name, game version, Steam state, time of the expected trigger, last action performed, and whether the same save existed before Hotfix 3. If progress or Watts also changed, stop and use the lost-progress checklist before creating more saves.
When to retry or report
Retry when the requirement is explicitly shown by the current game, Steam is initialized, the save is backed up, and the action is short and reversible. Restart once after the attempt and check Steam again. Network or client display delay can be separated from a game-state failure by this clean relaunch.
Report instead when the requirement is hidden or disputed, the only suggested retry is destructive, the save predates the confirmed counting fix, or the same current-build action fails repeatedly. Include evidence without asserting an unverified condition. Do not import a demo save as a workaround; demo saves are officially incompatible with the full game.
Sources and verification status
Officially confirmed: the Steam store lists 29 achievements. Officially confirmed: Hotfix 3 reworked secret counting to prevent a lockout when secrets were found before Steam initialized, strengthened saves, added backups, and expanded logging.
Needs verification: exact unlock conditions for individual rare achievements, current global rarity percentages, retroactive behavior for every older save, and whether any specific retry is required. Those unknowns are not presented as achievement requirements.