How to Unlock The Legendary Artillery Sphere Grenade

Artillery Sphere is a Ripper Grenade

Its special effect is Orbiting Body - On equip, spawns an orbiting Observer that deals damage to nearby enemies. The Observer will briefly attack enemies damaged by the grenade.

Unlock Location:

• Progress through the (A Zane to Kill For) DLC until reaching the Final Boss Biff Fistful

Farm Method:

• Defeat Biff Fistful to get a chance at the Artillery Sphere.
• After use the Encore Machine nearby to reset the fight.
• Repeatedly defeat Biff Fistful until the Artillery Sphere drops.