How to Get All Shadow Weapons. Shadow Weapons are guaranteed to be purchasable from merchants in Meridian after you reach the city in the quest The City of The Sun. They can also pop up in merchants around the world but this is dependent on the vendor's tier. Keep at least 1 stack of each type of hearts and lenses as they are used for trading. Depending on what weapons you use you could also sell off the materials used to make the ammo types you don't use (I only ever used fire arrows). Buying the golden travel pack will make it so you can sell off the normal fast travel packs. Fkm2Oh9.