The required chests for this achievement are the big ones that require you to mash
with your piolet. Unlike weapons, documents or prisoners, these collectibles don't have a way to be shown in your map, but there are a few ways to make it easier.IMPORTANT: Activate the "Legendary Gunsmith" challenge
before starting a Cold Darkness run, or this won't unlock.
Use a Master Outfit card so you have all survival instinct skills unlocked.You'll always find one of these chests at the top of each Chemical Processing tower
. That makes three sure ones, so you'll only have to find three more around the level.IMPORTANT: Entering the third tower is a point of no return
, so make sure that you have opened at least 5 chests before doing it, or you'll have to start again.
Besides the three chests from the towers, there are some random chests that spawn around the map. Here are a few examples.
Have at least one card that grants you all the abilities (a Master Outfit, for example) so you can spot the chests easily using your Survival Instinct. Try inside the big buildings (like the one that's above you at the start, or the facilities located southeast and southwest in the map), you'll always find a couple of chests in those.