This solution uses console commands in order to unlock all quest related achievements in the game. If you want to finish the game via actually playing it without commands, do not follow this guide
Do not use this solution on an existing save file, as it will effectively finish the game and ruin your progress/save, ensure you start a new game.Guide
1. Start a new game
2. Once loaded in, click the tide (~)
button on your keyboard to open the in game console above tab
3. Type caqs
and press enter
4. The game will now start cycling through every quest in the game, starting and completing it. Achievements will start to pop, while the game progresses through loading screens and dialogs.Your game may crash while the caqs command is running. If so reopen the game and refollow the steps to continue unlocking achievements. This may take a few tries.
You can come back to this page, resync your account and check the list below to ensure all relevant achievements have unlocked.
The following achievements will unlock using this method:
Credit to The Pants Party for their excellent guide over at Xbox Achievements.