are there no shadows in WAR? Looking at your pictures it seems really flat looking :( for example http://old-folks.guildlaunch.com/guild/library/gallery/56023/freddy%5Em_0268779.jpg
Ah OK - yes, it might be. Completely depends on the barrel that you're modelling. On the example one I linked above for you the hexagon part was welded on, and there was a cylindrical cap. :)
Proportions look alot closer to Dwarf now. It's interesting to see how different companies get that look for example comparing a WoW Dwarf to a AD&D one.
I'll do that at later since I needed renders right now and I'm not so familiar "yet" with in example marmoset or UDK. (Trying to learn) ^_^ Is that you Kostas?
If you decide to go with Unity it's relatively easy to setup most of the coding. Here's an example project http://unity3d.com/support/resources/tutorials/2d-gameplay-tutorial
remember that if you intend to work on UDK for example, you can later on add definition to each different rock model in editor using vertex colors + heightmap.