(This is the preferred main picture for the contest.)
I got frustrated with the limited number of parts in sand green pretty much instantly so I ended up with a technic frame with system armor plating on top, resulting in a creation that is fully buildable with existing part colors.
The armor is largely inspired by real life plate armor, while the belt has a pair of tongs, three different forging hammers, and two chisels, accompanying a medieval style warhammer as his main weapon.
Artakha mk2.io (mediafire link)
When opening the file there are four custom parts in the model, two each 1L/2L cut lengths of 3mm rigid flex tubing. The 2L ones hold the elbow double ball joint together, while the 1L ones are used in the cosmetic pistons in the back of the waist.
Edit: I had accidentally uploaded a stud.io file with an unfinished version of the lower legs, the link has been updated with the proper file.