Now that we have all of the available gear, have looted all of the Crypts and completed all of the Challenge Tombs, this is a great time to head out and mop up the rest of the outstanding collectibles/challenges in the other regions.
If you have followed the guide to this point, you’ll want to do the following to finish the game with 100% completion:
- **Siberian Wilderness –** Find the final two Relics.
- **Geothermal Valley –** Hand in **‘Ancient Secrets’** side-mission. Complete the **‘High Diving’** and **‘Tossing Gourds’** Challenges. Find the final Survival Cache and Document. Grab the four remaining Coin Caches.
- **The Acropolis –** Find the final Document and Coin Cache.
- **The Flooded Archive –** find the final Mural and the last two Coin Caches.
- **Soviet Installation -** Complete the **‘Capture the Flag’** and ‘ **Difference of Opinion’** Challenges. Find the final Strongbox and Survival Cache. Grab the seven remaining Coin Caches. Purchase all remaining items from the Supply Shack.