Following Black Ops III's DLC season and the unexpected release of Zombies Chronicles, hopes were high regarding Treyarch's Black Ops 4. Apparently poised to be the ultimate experience for fans of Call of Duty's longtime staple horde mode, Black Ops 4 zombies deviated drastically from the established formula to the disappointment of many dedicated fans.

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One of the most controversial changes was the removal of the Jugger-Nog perk, which had been a mainstay of the mode since World At War. In fact, the perk system was considerably overhauled, and, while some new perks fell completely flat, others turned out to be surprisingly useful.

Updated on September 7th, 2021 by Tanner Fox: While Black Ops 4 attempted to take zombies in a bold new direction, many players found the new maps to be too big, the new systems to be too complicated, and the over-the-top Easter eggs to be needlessly complex. Cold War reversed this trend, making the mode much more approachable for new players.

That said, Black Ops 4 hasn't been entirely forgotten by CoD fans, and, with perks from the fourth installment of Call of Duty's Black Ops subseries recently appearing in Cold War, it may be worth brushing up on some of the 2018 game's best additions.

Death Perception

The Death Perception Perk in Call of Duty Black Ops 4.

Added to Cold War midway through the game's lifecycle, Death Perception was first made available after the 2018 launch of Black Ops 4. Discredited by many fans, it's by no means a vital perk, but it can provide a small boost for newer players unfamiliar with Call of Duty's maps.

Death Perception allows players to see the outlines of zombies through walls and will provide HUD indicators of approaching enemies. It's a helpful—if not somewhat superfluous—perk, but most Black Ops 4 players wouldn't sacrifice one of their four perk slots for it.

Blaze Phase

Logo for the Blaze Phase perk from Call of Duty Black Ops 4.

Released alongside Tag Der Toten, the final DLC offering developed for Black Ops 4, Blaze Phase is something of a combination between PhD Flopper and Trail Blazers from Infinite Warfare's zombies mode. After crouching for a period with the perk active, the player will be catapulted forward after standing up, knocking over anything in their way.

The modifier extends the distance covered when the perk is used, and, while it can be useful in desperate situations, in the eyes of many zombies fans, Blaze Phase just doesn't cut it.

PhD Slider

The PhD Slider Perk logo from Call of Duty Black Ops 4's zombies mode.

Touted as a return of sorts of the fan-favorite perk PhD Flopper perk which initially debuted in the original Black Ops, PhD Slider is a reworked perk meant to act similarly to the original while accommodating the game's new style of movement.

Players with PhD Slider can build an explosive charge by sliding several times and then detonate it by sliding into a zombie. When in the modifier slot, the perk increases slide distance, explosive power, and provides immunity to traps while sliding. Though somewhat useful, the fact that it must be charged up before use makes it a relatively underwhelming take on the original.

Victorious Tortise

Black Ops 4 Victorious Tortise

At a glance, Black Ops 4's Victorious Tortise perk doesn't seem all that useful; it causes a player's shield to absorb all damage when wielded and to explode when broken. Though it can come in handy when cornered, it isn't all that useful most of the time.

However, the modifier allows players to knock down boss zombies with the shield, and this can be indispensable in tough situations. Though it doesn't happen all that often, and, of course, it requires a shield, Victorious Tortise's modifier can allow players to escape from otherwise inescapable situations.

Blood Wolf Bite

Logo for the Black Ops 4 zombies perk Blood Wolf Bite.

Perhaps one of the most creative perks ever introduced to the zombies mode, when players do a significant amount of damage to a pack of zombies, a wolf familiar will spawn and attack enemies for a period of 45 seconds. It's an interesting concept, and it certainly looks cool, but it's not quite as practical as some of Black Ops 4's other perk offerings.

When placed in the modifier slot, zombies killed by the player's wolf will drop unique power-ups. Yet, those looking to make impromptu allies are better off applying the Brain Rot weapon modifier to a pack-a-punched gun.

Mule Kick

Mule Kick logo from Call of Duty Black Ops 4's zombies mode.

First introduced on Moon, the original Black Ops' final all-new DLC map, Mule Kick was something of a controversial inclusion as, helpful though it could be, it asked players to risk quite a bit, allowing them to purchase and upgrade weapons they could potentially permanently lose. Plus, swapping through three separate guns could be a bit cumbersome.

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However, while it still isn't perfect, Mule Kick's modifier in Black Ops 4 makes it much more useful, as downed players with this perk in their modifier slot receive their lost weapon when they re-buy the perk. That said, it's far from Black Ops 4's most conventional perk offering.

Electric Burst

The Electric Burst perk logo in Black Ops 4's zombies mode.

Essentially a modified version of Electric Cherry which was introduced in Black Ops II's fan-favorite Mob of the Dead DLC map, Electric burst sends out a shockwave when players reload, stunning zombies and inflecting varying levels of damage based on how empty the weapon's magazine was.

The modifier applies this effect to the player's melee weapon; energy is stored with each reload and can be unleashed with a melee attack which can chain to other zombies. Though a nice ive effect, Electric Burst isn't quite as beloved as the perk on which it was based.

Ethereal Razor

The logo for the Ethereal Razor perk in Black Ops 4.

Introduced after the game's launch, Ethereal Razor is another situational perk. It allows players to use melee attacks to gain health, though this is a fairly risky prospect. However, this perk is doubly useful when used in the modifier slot, as it causes all melee attacks to be lethal to standard zombies, and it increases the damage of melee attacks against larger targets.

For savvy players, Ethereal Razor can be a get-out-of-jail-free card, but, without the modifier applied, it isn't nearly as useful as most of the game's other perks.

Timeslip

Black Ops 4's Timeslip perk symbol.

One of the many all-new perks introduced to Black Ops 4, Timeslip reduced the cooldown rate of equipment and made the box and pack-a-punch machines operate more quickly. When paired with Wraithfire, Black Ops 4's most prominent piece of extraneous weaponry, timeslip can be undoubtedly effective.

Plus, when used in the modifier slot, Timeslip increases the rate at which special weapons charge, which can, in some scenarios, be lifesaving. Of course, useful as it can be, more traditional zombie players who dislike relying on things like special weapons and overpowered equipment may not be inclined to add it to their perk repertoire.

Stone Cold Stronghold

Logo for the Stone Cold Stronghold perk in Call of Duty Black Ops 4.

A camper's dream, this would have been an amazing perk for those who cut their teeth huddled at the end of Der Riese's infamous catwalk in the World at War days. While most Black Ops 4 zombies maps aren't as conducive to that playstyle, Stone Cold Stronghold is still undeniably useful.

When standing still, players with this perk active generate a small circle around them and will receive a damage boost for as long as they remain inside of it. A group of four players using this perk together could be nigh on unstoppable save for the issues presented by ever-depleting ammunition reserves.