Siberian Wilderness - Poison Arrow Upgrade

As the new chapter begins, you'll receive a large XP award for your resourcefulness. If you've been collecting relics, documents, and so on, you should now have a Skill Point to spend. Turn around and follow the path back the way you came.

Climb the wooden wall.

Continue forward into a dark tunnel, where Lara spots what she says are death cap mushrooms. They look more like Amanita muscaria than Amanita phalloides to me, but a little poetic license is OK. They're easier to spot if they're orange. Pick the mushrooms (1/3) to add them to your inventory. Now you'll need to find two more bunches.

Continue through the tunnel to an open area with an ice wall.

Before climbing up, vault onto the low ledge on the left and scramble up the wooden wall to find a container with some herbs inside.

Then climb the ice to the ledge above.

Crack open the small crate to get some salvage, which the game explains will be used for upgrades and improvised weapons.

Approach the edge, jump up to grab the zip line, and slide down to the abandoned encampment below.

Now you're headed for the cave north of the encampment. There's also herb bush nearby. Both glow in Survival Instinct view. Pick the herbs.

Then enter the cave, which is just to the left of the rock ledge where you found the relic earlier.

There are 2 clumps of poison mushrooms (2/3 and 3/3) here: two just inside the cave...

...and another a bit farther in. You don't need the third to satisfy the mission, but pick it anyway, since it will come in handy. Your updated goal is to find cloth for the poison arrows, but first continue deeper into the cave. Don't worry; there's no hostile wildlife here.

Where the cave widens, there are 2 magnesite deposits, which glow when you press Survival Instinct.

Pry them out of the wall with your climbing axe to add magnesite ore to your inventory. Later you'll be able to make things with it.

Deeper inside the cave you'll find a document (4/6) titled In the Tomb from The Hunter series. Examine it for XP and a little boost to your Russian language skill. Then return outdoors.

You should still have some cloth (1/3) in your inventory left over from the bandage quest. Approach the abandoned encampment to find a crate with cloth (2/3) inside. There's more cloth (3/3) near the monolith. I suspect these locations are somewhat random, so if you don't find them exactly where I describe, just keep looking. They'll turn up. Once you have 3 pieces of cloth your goal will be updated.

NOTE: Before returning to base camp to learn to craft poison arrows, I recommend making taking a little time to practice hunting and gathering. There are hunting tips in the next section of the main walkthrough.