Fiendish Fortitude

Fiendish Fortitude is one of the five Demonic Fountains of Call of Duty: Vanguard Zombies, the fountains of the Dark Aether that take the place of the Perk-a-Cola machines. It raises the health of the player, and it was introduced on Der Anfang with the four others.

Overview

In Vanguard, perks are not bought from machines: they are drunk at Demonic Fountains. A fountain needs no power and can be used as soon as it is found. Each one has four tiers: the first drink is free, and every following tier is paid, at a rising price. A player who goes down keeps the perk but loses one tier.

First appearanceDer Anfang, Call of DutyVanguard, November 5, 2021

GamesVanguard

CostTier 1freeTier 22,500 pointsTier 35,000 pointsTier 47,500 points

EffectMore health

FamilyDemonic Fountains of Vanguard Zombies

TiersFour; one tier lost when the player goes down

PowerNone needed

In the First Room

Fiendish Fortitude is in no First Room of the site. The Hub has a book for two Vanguard maps, the two round-based ones, and both place the fountain outside the starting room. Der Anfang and Terra Maledicta have no book and no board here.

Map	Game	What the book of the map says
Shi No Numa	Vanguard	No Demonic Fountain in the Storage Vault. Fiendish Fortitude, the only fountain that never moves, stands on the balcony stairs above the Flogger Courtyard.
The Archon	Vanguard	None of the five Demonic Fountains is in the Temple: they stand in the Debris Field, the Spike, the Bazaar, the Derailment and the Tents.

The records of both maps are on the ZFRR leaderboards.

Effect, game by game

The Fiendish Fortitude fountain, a horned skull pouring a glowing red liquid into a cracked stone basin marked with its icon, Fiendish Fortitude, Call of Duty Vanguard Zombies

The fountain

Similarly to Juggernog, it increases the health of the player. The first drink costs nothing.

The effect

More health. Since the 1.09 Title Update of December 16, 2021, each tier adds 50 health, up to 300. Before that update, each tier added 25 health, up to 200.

Upgrades

Fiendish Fortitude is upgraded by drinking again at the same fountain. The price is paid in Essence, the points of Vanguard Zombies.

Tier	Cost	Health since update 1.09
Tier 1	Free	+50 health
Tier 2	2,500 points	+50 health
Tier 3	5,000 points	+50 health
Tier 4	7,500 points	+50 health, 300 in all

Going down costs one tier, not the perk itself. On Der Anfang and Terra Maledicta, a player who has stayed twelve rounds in all in the Void objective no longer drops below Tier II for the rest of the game.

Where to find it

Call of Duty: Vanguard: Der Anfang, Terra Maledicta, Shi No Numa and The Archon. The books of Shi No Numa and The Archon say where the fountain stands.

Call of Duty Fandom compares Fiendish Fortitude to Juggernog: both raise the health of the player. The four other Demonic Fountains are Diabolical Damage, Venomous Vigor, Demonic Frenzy and Aethereal Haste.

Trivia

The health bonus is the only effect of a Demonic Fountain that Call of Duty Fandom gives in numbers, and the only one it reports as changed by a patch: 25 health per tier before the 1.09 Title Update, 50 since.
On Shi No Numa, Call of Duty Fandom places it on the Balcony Stairs of the main hut, while the four other fountains are drawn at random among four huts.