Persistent Upgrades

Persistent Upgrades are abilities or upgrades a player gains in the Zombie gamemode TranZit and the Zombie map Die Rise. It is most commonly and incorrectly called Perma-Perk, which is misleading and incorrect as they are not perks and are not completely permanent, although the ability stays with you in future games until lost. And the fact that the term "Perma-Perks" was used for obtaining the Focusing Stone in Shangri-la and the achievement of completing the Moon Easter Egg. A Green flash/spark indicates when a player has received one, and an eerie sound will be heard when one is lost. Most have been found, though some remain undiscovered.

List of Upgrades

 * Fast Revive is one of the new Persistent Upgrades that gives players a similar effect as the Quick Revive Perk-a-Cola. To get this upgrade, a player must get from 5-20 revives in one game. You will notice a green flash when you obtain the upgrade, and your following revive text and bar will be highlighted blue/purple. To lose it a player must try and fail to revive a downed person, who then dies. When paired with Quick Revive the revives become near instantaneous.
 * Head Popper is another Persistent Upgrade that knocks off zombie's heads regardless of where the zombie was shot. To gain this upgrade a player has to get a collateral headshot (two headshots with one bullet). To lose it one has to simply not get a single headshot during a round. Sometimes the green flash will show in Survival on any of the survival maps, nevertheless the persistent upgrade will not be in effect.
 * If a player gets a large amount of barricades constructed during a game, barriers would then on be reinforced, making the zombies take a longer time to rip them off. This can be noticed with the texture of the barricades changed. To lose this upgrade the player has to not build a single barrier in a round.
 * Another Persistent Upgrade causes a player to go down in four hits instead of two. To gain it a player must buy Quick Revive, go down, then go down again. When paired with Juggernog it takes six hits to go down. To lose it the player has to die from fall damage or die with both the Extra Health and Juggernog.
 * A red version of Insta-Kill is possible to receive by not killing a zombie during the duration when Insta-Kill is in effect. When the red Insta-Kill is in effect all a player has to do to kill zombies is to walk into them. It is to note that the red Insta-kill lasts for a very short amount of time. To lose this ability the player has to kill a zombie while the effects of regular Insta-Kill linger.
 * Another Persistent Upgrade causes all Carpenter power ups to use steel barricades, regardless of the upgraded barricade ability. To gain it a player must kill a zombie coming in from a barricade while the boards from the Carpenter are being applied. It is not known how to lose the upgrade.