I ran into an error where somehow the battle test in the database is completely broken. The log says something about a file being missing.
Other than that, great plugin!
Viewing post in RPG Maker MZ Plugin: Achievements comments
I see the problem and it's on the Visustella side, not mine
Too patch it up during your game development duplicate the WD_Achievements.json and rename the copy Test_WD_Achievements.json, this will solve the bug
You don't need to update the Test_WD_Achievements.json, use it only as a dummy file to make Visu work