3D graphics for a game (plus some 2D)

We have a simple game that is already finished but has very primitive graphics. We need someone to redo all the graphics.

There are 2 animated characters, some environments and some props like stones, spikes, trees etc...

Refer to this youtube video to see the current version of the game: http://www.youtube.com/watch?v=NwrZO85WWWU

For an expert artist this should be a few hours job. We can eventually provide some of the original material as a guideline in order to save the artist some time.