2D game sprites and icons for a browser MMO (hand-painted, top-down, 40 px tiles)

Isle of Morrow is an Ultima-Online-style browser MMO in development. I need an artist for a fixed set of work, in six separately paid parts: a concept sheet and five sprite sheets for the game’s main enemy,... (Budget: $750 - $1500 USD, Jobs: 2D Animation, 2D Game Art, Game Design, Graphic Design, Icon Design, Illustration, Illustrator, Sprite Design)