Find a cure for the common Cold War in "Classified", the DLC map for Black Ops 4: Zombies. Here's how to get all four hidden codes.

Transform the Hell's Retriever into the Hell's Redeemer in "Blood of the Dead" -- here are all the secret steps you need to make the infinite use tomahawk even better.

Construct the Shield Wonder Weapon on all Zombies maps included in Call of Duty: Black Ops 4. Here's where you need to look to get all the hidden, randomly-spawning parts.

Get an overpowered, acid-spewing super-shotgun in the Black Ops 4: Zombies map "Blood of the Dead" with these Acid Gat kit locations.

Learn where to find all the shield parts and how to activate the disabled Pack-a-Punch machine on the roof in "Blood of the Dead', one of many new Zombies maps in Black Ops 4.

Get a returning weapon from the original "Mob of the Dead" map in Call of Duty: Black Ops 4. Here's how to get Hell's Retriever, a tomahawk that boomerangs back after every throw.

Secret songs are back! Listen to "Shockwave", a hidden Easter egg song on the Black Ops 4: Zombies "Classified" map. You just need to find some hidden vodka bottles.