Here is a 5 week long project I worked on as part of a unit on my university course.
Using pre-existing concept art, I used ZBrush to create a high-poly model which I then retopologized using a combination of both Topogun and 3Ds Max to create the low-poly model. I then textured the model in Substance Painter and Photoshop, rigged it in 3Ds Max and finally set the model and shaders up in Unreal Engine 4 for high-resolution beauty renders. More on Artstation: https://www.artstation.com/artwork/LWkrP