Here's the Expedition Mech, one the the first works in my company. I and another guy worked on the modeling, my tasks are the planning of the model, modeling the arms, backpack, the legs, connection parts. The model later was rigged and animated by another guy. Then I did some sound effect for the whole animation.
Front view
Back view
My leader also posted the model on Scketchfab, you can view with the link below: