Metal Slug Tank Art Test - 25 hours

This is a recent art test I did for a job application.
I was tasked with creating the Di-Cokka Tank from Metal Slug based on the drawing below.
I was told to target 25 hours of work and to keep the textures simple and painterly.

While I don't consider this asset "finished," I wanted to display what I was able to create in a pressured time crunch.