Posted on 14 April 22 at 23:32
NOTE: You do not have to delete your save data in Gorogoa if you miss the 500 moves or 30 minute achievements. You can simply start up Chapter 1 and play through the game again (even with all the chapters unlocked). You do not have to manipulate or delete your save data ever. I know this because I played through twice to get the above achievements (plus the missables) and had no issue.
(I believe the original forum poster was confused about this)