Here Time-lapse videos of some weapons I did for Warframe.
Those videos don't show all the process, sometime I just forgot to record what I was doing :S
But it still give you an idea of how I work.
This video show how I sculpted the Grineer Twin 'Kohmak".
This video show how I sculpted the Grineer Lever Action pistol "Marelok" and Rifle "grinlok" in Zbrush.
This video show how I sculpted the Infested whip "Scoliac" in Zbrush.