A few weeks ago I've been working on this character by Room8Studio to practice the video game pipeline and improve as Character Artist.
I'm happy with the result, probably there's a few things I would do different now, or maybe avoid following the folds on the silhouette and doing it cleaner, thinking about animation too. But I think I improved a lot and I spend 60h on this work, so I think I did it pretty fast too.

Low poly and mechanic arm sculpting were the more difficult parts of this character.
Sculpt is full done in ZBrush.
Retopology in Maya.
UV Maps in Blender + Some mesh fixes.
Baking and Renders in Marmoset.
Texturing in Substance Painter.

I hope you all like it!!
And thanks to Room8Studio for such an incredible concept :D
https://www.artstation.com/room8studio