I will start a new project with an rigged an animated walker. The original model was designed in 3D-Coat, then exported with a high level of polygon reduction to lightwave. I will now reconstruct it (at this point, one wouldn't talk about retopology, since I will change heavily the overall looking and details).
Here is the 3D-Coat model as imported in Lightwave :
Here is the first sep of reconstruction with the torso seen from back and face.