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The Big One is an almost invincible and huge zombie. It is seen in Level 3 zones, i.e., Pine Wood, Limestone Spires, Oak Grove, and Frosty Backwoods. Sometimes appears in Level 2 zones, such as the Pine Grove, Limestone Cliffs and Oak Bushes, when he spawns the ground will shake, indicating that he is charging towards you.

With update Beta v.1.6, multiple spawns were added in the Infected Forest (three or more can attack at once). The Big One can also be seen locked in a room in the underground portion of Bunker Alfa.

But, the update Beta v.1.8.5, the Witch has replaced this Zombie (The Big One). To find him, go to the Second Floor of the Bunker Alfa. However, it has been trapped in a room, and is blocked by obstacles.

It drops a "CAC Card Z" around 10% of the time, and will drop several Combat Gear Coupons (Only The Big One in Bunker Alfa.) and gives 1,000 xp when you kill him.

This zombie can be killed, but it only takes 1 point of damage for every 20 you deal to it. You could take 2 full SWAT gear sets, First Aid Kits, and Shotguns, Modified Glocks, VSS Vintorez, or Miniguns. Only weapons with a base damage of 20+ can harm him.

Another idea is to buy packs in the store and then grab guns out of your inbox as you need them. (First Aid Kits and SWAT armor in your inventory.) Tested in Beta v.1.5.6, however, a huge amount of guns is required (7 VSS Vintorez needed to take him down, but the guns are rare).

He is currently not supposed to be killed, but it CAN be. Advice is to run immediately unless attacking on purpose.

He also spawns when the noise meter reaches 100 while Raiding AI bases, along with 2 Toxic Abominations.

Avoiding The Big One

If you are out farming and happen to encounter a Big One, you may try to run him out of the map. Video is provided to show how you may attempt such a feat.

Additionally, you may also run to the closest area near you on the map, and come back, as the map has reset and the Big One should have disappeared.