The illustration is based on a 3D lowpoly ingame character, concepted by Max Hugo, sculpted by Max Lenneper and animated by Andrius Jocevicius.
Concept by Max Hugo https://www.artstation.com/artwork/ozzXk
Animated 3D model https://sketchfab.com/.../5ff43d0337a44789b3b92531b7c44dd4
I am showing the creation process of the illustration for those who are interested.