How to add new pickup

  To add a new pickup create a new child blueprint of _BP_Pickup_Base class(for weapon _BP_Weapon_Base)

  Add components for representing that pickup class(like static mesh or skeleton mesh)

  Override Onpickup function and add your code that executes for pickup event.

  Open BP_Gamemode_Default class, add this newly created class into PickupList, that will spawn it randomly in the level.