This guide will help you make reset progress without resorting to scripting, coding, or modifying game files.
Guide to Reset Progress
If you have completed your game and would like to do it again, maybe even several times, and try speedrunning it; delete all your omnistones, take all your artifacts, put all the characters back in their places.
Do not have trying removing achievements, disconnecting from the cloud, deleting files, etc. It’s nothing seems to work.
What to Do
If you want to do that, you can disable Steam Cloud for the game and delete the folder:
- C:\Users\USERNAME\AppData\LocalLow\Gravity Lagoon\Gatekeeper
That should work.
Important note: All this information is stored in the save files.