This guide is simple. You're going to be downloading a 100% completed save file (courtesy of Steam user Darkwarrior), and using a few in-game cheat codes to finally trigger those missing achievements.

Make sure your game is closed before following these steps

(You can skip to step 5 if your game is already at 99% completion or above)

1. Click here[drive.google.com] to download the save file, and unzip it.

2. Navigate to your Lego LotR savedgames folder (your file path might look something like this)
C:\Program Files (x86)\Steam\userdata\*USERID*\214510\remote\savedgames

*USERID* = your Steam user ID (usually about 9 digits)
214510 = Lego Lord of the Rings' Steam ID

3. Copy the 'game1.legothelord...' file into a slot folder, and have it overwrite any preexisting saved game. (Be sure to back up the original save file before doing this if needed)

4. Boot up the game and load the new save file

5. While in-game, pause, go to Extras, and then select Enter Code

6. Use the dials to enter the following codes:

• W5EJVP (this one unlocked My Precious... for me)
  
• RYPWVD
  
• Z5FKXM
  
• EHEP4C
  
• 6MWEAX

Note: These were provided by TT Games and will only work if your game is at 99% completion or above

After putting 30+ hours into this game, several of which were spent trying to get glitched Mithril bricks to no avail, following these steps is what worked for me, and hopefully they'll work for you too!

Let me know if you're having any issues with the codes or the link provided. If this guide helped you at all, please leave a rating. Thank you!