- For a similar perk, see Deadshot Daiquiri.
Diabolical Damage is a Demonic Fountain featured in Call of Duty: Vanguard and introduced on the map Der Anfang. Similarly to Deadshot Daiquiri, the Perk increases the damage dealt on critical hit.
Like the other Demonic Fountains, Diabolical Damage features 4 Tier Upgrades with the base Tier being free and every subsequent Tier having an increased cost: 2500 Essences for Tier 2, 5000 for Tier 3, and 7500 for Tier 4. When downed, the player will keep the Perk but will lose one Tier.