The Charm of Immunity is a minor Defense charm in Ghost of Tsushima. Enemy arrows have a 15% chance to do no damage to you. You get it by finishing The Way of the Bow or Flesh and Stone.
Any of these tales gives it as a reward: The Way of the Bow, Flesh and Stone.
Storming Falcon
Storming Falcon is a dye for the Half Bow. It is a reward for completing "The Way of the Bow" (Ishikawa's tales, part 4 of 9). Like every dye it only changes colours.
Image: Sucker Punch Productions / PlayStationBamboo Strikes
Bamboo Strikes are button-timing challenges where Jin slices a row of bamboo poles. There are 20 in all, 16 on Tsushima and 4 on Iki, and completing them raises your maximum Resolve.
Charm of Advantage
The Charm of Advantage is a minor Melee charm in Ghost of Tsushima. Ghost weapons deal 20% more damage. You get it by finishing The Cost of Iron or Nattou and the Sake Seller.
Charm of Broken Barriers
The Charm of Broken Barriers is a minor Defense charm in Ghost of Tsushima. Breaking an enemy's guard gives you 15% of a Resolve point back. You get it by finishing Honor Buried Deep or The Delicate Art of Negotiation.