This recipe is designed to get close to the box art and is based completely off of GW tutorials and color schemes.  An extensive range of Citadel paints are used in this process.
  Basecoating
- Basecoat face with   Rakarth Flesh  
- Base coat armor and mask in   Celestra Grey  
- Base coat outside of cloak using   Waaagh! Flesh  
- Base coat inside of cloak and strips of cloth (backpack scope and knife) using   Deathworld Forest  
- Base coat rifle casing, grenades, and chain leading from belt clasp with thinned down   Abaddon Black  
- Base coat leather leggings, sleeves, and belt with   Dryad Bark  
- Base coat knife hilt and pommel, gemstone settings, charms (including on corners of cloak and grenades), and rifle detailing in   Retributor Armour  
- Base coat knife blade and ammo feed with   Leadbelcher  
- Base coat rifle foregrip, rifle and backpack scope lenses, and oval gems with   Doombull Brown  
- Base coat gem hanging from belt clasp with   Thousand Sons Blue  
Shading
- Shade outside/inside cloak and strips of cloth (backpack scope and knife) using   Biel-Tan Green  
- Shade face, knife hilt and pommel, gemstone settings, charms (including on corners of cloak and grenades), and rifle detailing with   Reikland Fleshshade  
- Shade armor, leather leggings and sleeves, belt, rifle foregrip, scope lens, oval gems, and gem hanging from belt clasp with   Nuln Oil  
- Shade knife blade with   Druchii Violet  
Layering
- Layer raised areas of outside of cloak with   Loren Forest  
- Layer raised areas of the inside of cloak and strips of cloth (backpack scope and knife) with   Elysian Green  
- Layer face with   Flayed One Flesh  
- Layer armor with   Ulthuan Grey  
- Layer leather legging, sleeves, and belt with   Gorthor Brown  
- Layer rifle casing, grenades, and chain leading from belt clasp with   Eshin Grey  
- Layer knife hilt and pommel, gemstone settings, charms (including on corners of cloak and grenades), and rifle detailing with   Liberator Gold  
- Layer gem hanging from belt clasp with   Ahriman Blue  
Edge Highlighting
- Edge highlight outside/inside cloak and strips of cloth (backpack scope and knife) with   Ogryn Camo  
- Use   Ogryn Camo  to create vine pattern on cloak
- Edge highlight face with   Pallid Wych Flesh  
- Layer/edge highlight armor and gem hanging from belt clasp with   White Scar  
- Edge highlight leather leggings, sleeves, and belt with   Baneblade Brown  
- Edge highlight rifle casing, grenades, and chain leading from belt clasp with   Administratum Grey  
- Edge highlight knife blade, knife hilt and pommel, gemstone settings, charms (including on corners of cloak and grenades), rifle detailing and ammo feed with   Stormhost Silver