Cartoon Player Character Remesh

I have an existing 3-D player character that needs a full remesh so it runs efficiently in-game without losing its fun, cartoonish vibe. The current asset is too dense for real-time use; after you clean up the topology I should be able to drop it straight into Unity/Unreal and start animating... (Budget: $250 - $750 USD, Jobs: 3D Animation, 3D Design, 3D Game Art, 3D Modelling, 3D Rendering, Animation, Blender, Unity 3D)