Feh, Orion system handheld cannon with a entire clip's worth of nuclear bombs akin to the Yamato Cannon from Starcraft. This is attached to the shoulder a highly modified Marauder Armor that uses twin BFGs on either "hand", making it a highly deadly foe for anything supernatural. In addition, it can be lifted and dropped from a CH-47 Chinook.
This is usually accompanied by a cadre of Terran Marines, all clad in reinforced CMC-300 armor. Each one wields a C-14 rifle loaded with depleted uranium shrapnel ammunition, with a variety of accessories. These include a vertical forward grip, laser sights and shoulder stocks. In addition, they all have M98 ballistic alloy combat shields.
If we need heavy support, our little unit can call on a Assault Gun with incorporated transformation technology similar to the tech used in the siege tank. Each shell launched from the assault gun is a sweet, sweet combination of thermobaric and depleted uranium shrapnel perfect for killing anything smaller than Godzilla. In addition, armored bulldozers can supplement this assault gun.
For really heavy support, we bring out the ultimate weapon.
Are you ready?
Evangelion Mecha Godzilla, my friends. Truly the greatest feat of military engineering of all time, this massive metal giant combines the divine power of a angel with the mutated power of Organizer-G1 encased in a massive NT-1 shell. It's armed with optic maser cannons, shoulder-mounted cannons, tranquilizer missiles , shock cables , wrist-mounted blades and the Absolute Zero Cannon. In addition, it can use it's AT Field for both attack and defense. The downside is only Ironbite is able to pilot it without going crazy from the ghosts of Japanese soldiers whispering in his ears.
But on the upside...it's most likely invincible against anything on the list.