Enclave's Advanced Power Armor MkI (quasi-retconned to X-01 in Fallout 4), modified with Fallout New Vegas's Remnants Tesla Armor style Tesla nodes and with a Vault-Tec Security paint job from the War Tags mod (FO4 / great stuff!!!). Carrying Atom's Judgement, a unique weapon from Fallout 4: Far Harbor DLC with modded textures on the fusion cores.
The radioactive goo and the Tesla nodes are covered with phosphorescent paint, so they glow in the dark. The visors are from oversized beads so they are golden/reflective.
Most pipes are made from either plastic straws or the insulation from electric wires.
Height: ~42 cm
Build time: 5 months-ish
Difficulity: ...You don't want to know.