This achievement is relatively easy, but can be annoying also unless you know what your looking for and game setup.
So from the main menu do the following:
Now as per the image select:
Player: SINGLE PLAYER
Level: SIBERIAN WILDERNESS
CHOOSE YOUR CHALLENGE RAIDER
at a cost of 1000 credits.
Then continue with
CHOOSE YOUR CARDS
I’d advise the following or something similar in style:
1. Player Strengthening: TOXICITY
2. Bows: COMPOUND BOW V
3. Endurance: HOT BLOODED
4. Endurance: BLOODLUST
5. Explorer Outfits: EXPEDITION JACKET: MASTER
Now START GAME
Once loaded in immediately start using your vision ability.
Running around actively looking for Tombs, killing prey and eating for food, I’d also advise finding and picking up a lantern for warmth.
As soon as you enter a Tomb drop your Lantern inside near the camp fire spot, so you can pick up again on exiting to keep you warm.
You will need to find 5 Tombs for your 5 Codices or Sarcophagi.
You will only find 1 of each at the end of your Tomb which looks like the following:
Now rinse and repeat in a total of 5 different Tombs, finding and opening these large artifacts with
On your 5th and final pick up, pop achievement unlocked!