This is a quick scheme, where shortcuts are taken where possible.

Prime in Zandri Dust (to get away with basing the armor in just one layer of Canoptek Alloy 🙂)

Armor

1. Base in Canoptek Alloy
2. Wash with Agrax Earthshade
3. Highlight with Canoptek Alloy

Fatigues

1. Base in Dark Reaper
2. Shade recesses with Incubi Darkness
3. Highlight with Thunderhawk Blue

Straps / Leather

1. Paint with Gore-grunta Fur

Black boots and gun casing

1. Base in any black
2. Drybrush Eshin Grey

Green glow

1. Base in any white
2. Paint with Tesseract Glow
3. Shade using thinned Warp Lightning