Hello. There was an issue where a test file caused some users who updated the last build to find that they had completed the game entirely. This was an error from the deployment of the build. We have rolled back the build and are deploying a new one with the fixes. If any users wish to delete the progress of the game without triggering achievements, you may delete your save files. it is important to delete the persistent save file if you want a clean start. For those who managed to get all the achievements, we sincerely apologize for the issue happening. We cannot revoke achievements individually per account. For those truly wanting to remove all achievements from their account, there are third-party programs that let you reset achievements. It is important to emphasize that neither us nor Valve endorse the use of those programs, as they may result in VAC bans. So please be cautious using third-party programs.