This video is your guide to farming / acquiring (for the limited ones) all upgrade materials so you can finish your prosthetic upgrades before you start your second playthrough, or just so you can get the achievement.
Timestamps:
Scrap Iron & Black Gunpowder: 0:44
Scrap Magnetite: 1:14
Lump of Fat Wax: 1:36
Yellow Gunpowder: 1:58
Adamantite Scrap: 2:25
Fulminated Mercury: 3:54
Lump of Grave Wax: 5:44
Lapis Lazuli: 6:49
Phantom Kunai: 9:11
Pine Resin Ember: 9:52
Malcontent's Ring: 10:40
Follow me on twitch! : https://www.twitch.tv/sloppy0000
Sekiro: Shadows Die Twice is an action-adventure video game developed by FromSoftware and published by Activision. The game was released worldwide for Microsoft Windows, PlayStation 4, and Xbox One on March 22, 2019