11000 is too much indeed!
Seeing the wireframe ther is lot lot lot of useless polygons that don't add anything to the model.
I's wasting polygons and requiring too much power for nothing.
What you can do is use a great retopology tool ,like with Blender,3D Coat or any other to remake a low poly/medium poly version fast.

An example even there i think there could be lot of optimisations on head and arams that seems to have too much polys :



But for AAA production and AAA engine, only the man characer
can reach such amount of polygons and more :


Some Gears of wars ennemies just use around 5000-6000 polygons
and they look reaaly deatailld in game with use of normal maps :
Gears Of Wars example