Warhammer 40k Ancient Dreadnought
Another 40k monstrosity for your viewing pleasure.
"I am vengeance. I am retribution. Fear me, heretic, for I am your death."
— Dreadnought Brother Zakiel at the battle of Shadowmarch
A Castraferrum Pattern Mark V Dreadnought of the Ultramarines Chapter in combat, armed with an Assault Cannon and Power Fist
A Dreadnought, officially designated a Castraferrum Pattern Dreadnought, is a cybernetic combat walker of intermediate size used by the Chapters of the Adeptus Astartes as heavy infantry support for their Space Marine companies. Even the superhuman Space Marines are still mortal and can fall in battle despite legends to the contrary amongst the common people of the Imperium of Man. Dreadnoughts are war incarnate, towering machines that advance forwards with thunderous strides, fiery death roaring from the myriad of heavy weapons mounted on their hulls. They are terrifying foes, fighting with all the skill and ferocity of a Space Marine, but combined with the durability and firepower of a battle tank. Dreadnoughts are often mistaken by mortal observers for huge suits of battle armour or robots; they are similar to both and yet neither. Dreadnoughts are a combination of armored walker and cybernetic life-support system; their pilots are neurally linked straight into the Dreadnought's cybernetic systems, and are able to use the walker as if it were their own body, although they are permanently entombed within its Ceramite skin until they are destroyed.
This is one of the tankiest walkers I have ever built, more than half the CPU is used for armor yet it only weighs in at 1400
You get six rounds with the plasma, lots with the flak and continuously firing the lasers still allows a slow recharge of the weapon power.