looks great.., you could fiddle with lighting forever on this one.., the walk cycle.., reminds me a little of lurch in the ADAMS FAMILY.., not DEATH. I would imagine death to be more spider like in his walk.., slower, looking carefully from side to side.., hands slightly reaching out.., ready to grab at something.., the knees lift more, the hands creepy.., long fingers to match the overall look.., ect
sorry, the walk does not look like the walk of death to me.., when i think walk of death.., i think 'spider' not 'lurch.'
(no need for a hump back.., the character will be in the walk from here no matter how much you try to patch up whats missing by re-arranging the model.., i dont think re-modelling will do anything for the character.., the model is already great.)
jut my opinion.
take it easy and life will be easy