How to Fix 'Completionist' Achievement

Stuck on 21/22 achievement completion? This guide should hopefully help you get that last achievement.

Intro

This bug has been fixed by the user Jepp, with a mod shared on the community discussion forum.
Given that its a reply to a thread, I figure it'll pretty easily be lost, so I decided to make a guide to help others find the fix mod more easily.

How to Fix

• First, make sure to actually get all the other achievements. I assume you already did this but just to be sure.
  • You can always apply this beforehand, but obviously it's not going to do anything until you have all the achievements.
• Close the game if it's open.
  
• Download the MelonLoader mod loader[github.com]. Click on 'MelonLoader.Installer.exe' and save the file.
  
• Download the PDTA 3D fix mod from here[github.com]. The mod page also includes instructions so you can just follow those instructions instead if you want.
  
• Run MelonLoader.
  
• Deselect the box that says 'Latest' next to the version number.
  
• Select version v0.5.7 from the dropdown menu.
  
• Select the game executable (PTA 3D.exe) as the target and run the installer.
  
• Place the mod file, PTA3D_AchievementFix.dll, in the new /Mods folder in the game directory.
  
• Run the game. MelonLoader will launch.
  
• If the MelonLoader window that opens is just a blank black screen, make sure you're using v0.5.7. If done correctly, you'll see some MelonLoader logs before the game starts up.
  
• Click LMB or A and actually start the game. Wait around for a moment, it might take a few seconds but the achievement should register.
  
  • If you didn't get all the achievements in advance, you'll of course have to do that before it'll do anything.
• Enjoy your 100% achievement ribbon or whatever.

[MultiGamer856]

Should've searched this sooner. Been stuck at 21/22 for too long. Thanx a lot!

[Evil J0rdan ⁸⁸]

Thanks

[Sesungus]

Excelente guía, maestro!!!

[PankratPRO]

Сработало. Like)

[Proleauge]

Nice guide! I gave you extra helpful award (also are the devs still working on this game? if so, why cant they just fix it?)

[FissionCube]

@Cat587 youre welcome! im glad it helped someone find the fix :>

[Cat587]

Thank you big time for the guide! I can finally sleep knowing I truly touched everything