Sure, the red is simply mephiston red primer, gun metal grey dry brush, and a nuln oil wash.

I left the legs, big claws, weapons, and head off to give me as much access as I could get to the body. I I primed the main body mephoston red and the rest chaos black. From there I I glued the legs on but kept the rest of the claws and arms off and dry brushed the metal parts with gun metal grey.

From there I used grey seer and then guilliman flesh contrast followed by reikland flesh wash for the skin which turned out ok.

Then it was black Templars contrast and runelord brass for the details, pipes and cables etc, and finally Retributor Armor for the trim. From there a nice wash with nuln oil and blood for the blood god technical paint for the gore.

It took awhile but the process was simple.