The R Rune is located behind the Red Fungi Bramble to the left of the Nornir Chest. Place a Hex there with a Sigil Arrow and then ignite it with a Blazing Surge (L2+R2) to burn it down. The easiest ...
The chest contains the Tartarus Rage Heavy Runic Attack for the Blades of Chaos. It has Kratos slam each of the blades into the ground in a Y spread, creating fiery shockwaves that stagger and then ...