Nucleus-Suits

Nucleus-Suits were once used in the Wars, but are now much rarer and more expensive. They are normally passed down from generation to generation in families.
A Nucleus is a suit composed of Ymirstuff (an alloy of antimony, cerium, dysprosium, erbium, europium, gadolinium, gallium, germanium, holmium, indium, lanthanum, lutetium, neodymium, niobium, praseodymium, samarium, tantalum, terbium, thulium, ytterbium and tungsten), the alloy used to make the gates of Thetmis and Disra.
The first layer of the suit is a layer of Ymirstuff, underneath that is a crystalline gel that stiffens upon impact; a bullet would pass through and then be given resistance upon entering the gel.
Behind the crystalline gel is a standard ballistic plate made of titanium, then behind that is a sheet of diamond-graphite alloy (to make it less brittle).
After this is another layer of gel, since medium-armor omits the diamond and the light-armor omits the diamond and the extra gel in the back. The idea is to have a soft impact, followed by hardening, then hitting a ballistic plate; and if a projectile is powerful enough to get through both, it hits diamond, then more gel. The gel is also able to dissipate some direct energy weapons, doubling its use.
And beneath this layer of crystalline gel is yet another ballistic plate, made of carbon-steel, which has a carbon content up to 2.1 percent by weight, a yield strength of 260 megapascals (MPa), and a tensile strength of 580 MPa.
Underneath this ballistic plate is another layer of gel and under that is a ballistic plate made of Maraging-Steel, which is made with 15-25 percent nickel and other elements including cobalt, titanium, molybdenum, and aluminum with a low carbon content. This has yield strength of between 1400 and 2400 MPa.
Underneath this ballistic plate is another layer of gel and underneath that is a ballistic plate made of stainless Steel, with yield strength of up to 1,560 MPa and a tensile strength of up to 1,600 MPa, is made with a minimum of 11 percent chromium and often combined with nickel to resist corrosion.
Underneath this ballistic plate is yet another layer of gel, and under that is a ballistic plate made of an alloy of cobalt and tungsten.
Under this ballistic plate is another layer of gel and underneath that is a ballistic plate made of Inconel, which is an alloy of austenite, nickel and chromium and can endure extreme conditions and high temperatures.
Underneath that ballistic plate is another layer of gel and under that is a ballistic plate made of vanadium.
Underneath that is another layer of gel and under that is a final ballistic plate made of an alloy of rhodium and tungsten.
In total there are nearly ten layers of crystalline gel and just as much layers of metal ballistic plates. This thick armor gives the Nucleus extreme durability, and the crystalline gel itself protects its wearer from severe temperatures.
The Nucleus is equipped with an assortment of weapons, including various blades and firearms. It is also loaded with biological weapons including teargas and mustard-gas (which are fired in silver canisters).
The main weapon of a Nucleus is a high-powered pnuematic-rifle that utilizes hyrdaulic-fluids to produce exponential pressure to accelerate a large Bolt (heavy bullet made with a mixture of lead, iron and tungsten) which can cause electronically-charged antimatter-combustions to open holes in enemy vehicle armor, and neutralize moving volatiles. Unlike traditional semi-automatic pnuematic-rifles that utilize an equalizer-port found at the end of the barrel, which allows excess gas-pressure to escape when the piston is fully extend and then pushed back by a spring, this "anti-tank rifle" requires the use of a manual depressurization-lever that unlocks a port on the side of the weapon. Due to the nature of the mechanics involved, the rifle isn't able to be built with a shot-magazine and thus is only able to be shot once before needing to reload, although the shots pack a powerful punch.