How do you get Erdick's weapons and armour?

The rusty armour and rusty sword. It says their origins are unknown but if you get glass frit you can turn them into Edricks items. I have only got the sword which is mad powerful. You need 9 glass frit, 1 orichilem and the rusty sword. You can find the rusty sword in the realm of the almighty. The rusty helm from the Pirate King in Dourbridge when you give him 62 medals.

There is actually 5 Pieces, the Rusty Armour is gotten from a DLC quest, the Helm from Max Meddlin, the Sword from a chest in the Realm of the Mighty, the Sheild from a Quest in Zere Rocks (post-game), and the rusty Gauntlets I've yet to find, altogether you'll need 45 Glass Fritt and 5 Orichalcum to get the full set

Alot of people don't know were to get the rusty gauntlets buts it is really very simple. After you have won the game go to stonaway. In the castle in one of the towers there is a goast of a soilder. Do his quest. After that go to brigidom the place thats like destroied and full of monsters. Outside next to the castle in the top corner there is a singel grave stone. Click it. A man will appear. Take his quest and he will give them to you before you even start his quest. Hope that helped!