Call of Duty Zombies: How to Find and Upgrade All Wonder Weapons

Learn how to upgrade the D.I.E Shockwave Wonder Weapon into all four elemental variants in Call of Duty: Black Ops Cold War Zombies.

source https://www.ign.com/wikis/call-of-duty-black-ops-cold-war/How_to_Upgrade_All_4_Elemental_Variants_of_the_D.I.E._Shockwave_Wonder_Weapon_in_the_Die_Maschine_Easter_Egg