


The second method is through exfils, which allow you to end your zombies run by jumping aboard a chopper and leaving the undead behind. The crystals also stack as you go through a zombies run, so if you reach round 21 for example, you would have earned three crystals in total for hitting milestones at 10, 15, and 20. It is not currently clear why these discrepancies happen. Note that the amount can sometimes fluctuate from the figures shown in the chart above and there are instances of players getting one extra or one less crystal than expected when completing a milestone round.

This is the maximum amount you can earn of each type, so once you hit that limit, you’ll stop earning them in-game. To fully max everything you possibly can out right now in Black Ops Cold War zombies, you will need 168 Raw Aetherium Crystals, 112 Refined Aetherium Crystals, and 140 Flawless Crystals. Season Two also introduced two new types of Aetherium Crystals – Refined and Flawless – which are used to upgrade your gear to tiers four and five, respectively. Thanks to an update to the upgrade system in Season Two, each class of weapon, ammo mag, perk, and field upgrade has five stages to upgrade to. Keep getting clobbered by zombies even when you’ve chugged down a Juggernog? Want to make your best zombies loadout even stronger? Need to keep reviving your puny teammate? Well Aetherium Crystals may be the solution all of the above in Call of Duty: Black Ops Cold War zombies.Īetherium Crystals are a new currency in the Call of Duty zombies mode and give players a chance to upgrade their weapons, ammo mods, perks, and field upgrades to give them more of an advantage against the hordes.
