The level 9-10 Behemoth is capable of withstanding 3 shots from a Plasma Turret before being destroyed.
Behemoths are very vulnerable against Bullets and Hellfire type attacks, but are highly resilient against Explosive attacks such as from the Mortar Turret.
Appears to be an over sized version of the SU-100 Tank Destroyer. However the SU-100 did not have a large caliber weapon and as such the gun are similar to the 305 mm Short Howitzer Type7.
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With a 300 mm short barrel main gun and thick steel plating, the Behemoth crushes anything foolish enough to oppose it.
— In-Game & Gear Store Description
The Behemoth dwarves all other tanks, additional thickness to the already impressive armor means this version can withstand more punishment than any other tank.
— Level 10+ Description
MISSION - Sergey Kalashnikov's twisted genius has created the ultimate rolling fortress, the Behemoth Tank! Destroy 30 Sickle Syndicate level 40 bases and I'll be able to construct this monster for your own destructive tendencies. Other level bases or factions will not count towards this mission.
— Mission - Advanced Mission #3
MISSION - With the Behemoth Tank at our beck and call, the World Map is ours for the taking, Commander!.