This guide shows how to get all collectibles in The Lost Treasury area of the Midgard Region in God of War Ragnarok.
1) Nornir Chest
The chest is on the right side of the giant wheel of The Lost Treasury at the location shown in the picture below. To unlock the chest, you will have to ignite three torches.
Move the wheel to the left. This will reveal Torch #1 as shown in the picture below. Shoot purple arrows and then hit the arrow with your blade to create an explosion, igniting the torch.
Now use the wheel to climb up the wall on the left side as shown in the picture below. Defeat the enemies there and then turn right to see Torch #2 as shown in the second picture below. Shoot purple arrows and then hit the arrow with your blade to create an explosion, igniting the torch.
Now go back down and move the giant wheel to the right side and use it to climb up the wall on the right side as shown in the picture below. Hit the explosive barrel there. This will make the pillar behind it break and fall down. Move the fallen pillar to the left as shown in the second picture below. Then climb down and move the wheel to its left. Climb up again and push the broken pillar to the left. The pillar will start overhanging from the wall. Now climb down and move the wheel to the right. This time the wheel will be blocked midway by the overhanging pillar as shown in the third picture below. The gate behind the wheel will be accessible now. Rotate the crank in front of the wheel to open the gate. Then freeze the two gears on either side of the wheel as shown in the third picture below. Now go inside and you will find Torch #3 on the right side as shown in the fourth picture below. Shoot purple arrows and then hit the arrow with your blade to create an explosion, igniting the torch. This will unlock the chest. Open it to get a Horn of Blood Mead.
2) Legendary Chest (Folkvangr Whetstone + Accessory: Sigil Punishment)
It is right ahead of you as you enter the first room, containing the third torch.
3,4) Lore (Lore Marker – Love’s End) & Favor: Sigrun’s Curse
On the left side of the legendary chest, you will find the treasury door. It will be blocked by vines. Use your blade to burn the vines. Then use the Fjoturlund Vault Key (From Sigrun’s Curse Favor) to open the door and go inside. The lore marker is on the right side as shown in the picture below. Interact with it. This will also complete the Sigrun’s Curse favor.
5) Lore (Lost Page)
Climb up the chain on the opposite side of the lore marker. After reaching the roof, turn around and jump on the cracked floor as shown in the picture below. This will break the flood and you will find the lore down below.