Q: Where can I find the new weapons?
A: They can be found throughout PVE. If you'd like to access them quickly, you can use an in-game Cheat Code at the Firelink Handmaid by performing "Point Forward > Point Down > Bow" in front of her. 
In order to gain souls to level up or buy these items, follow up the previous gestures with "Look Skyward".

- dc official App