They look very good.
I only have a little grip though,find any good reason to put some colors on them such as a little red fancy rope or just a black leather belt-holder(wrd?)possibly using white patterns or more colorful ones which will depend on the character(s)' pallette.
I love this site...
http://www.colormatch.dk/
PS:If you want a better/helpful critique,I suggest you identify the polycount and texture size for each model/parts displayed.
Also a wireframe overlay shot(if the software allows it

) would help to judge the mesh and it's aspects next time.
Also I would suggest to show them for critique at the modeling stage as well to get insights on how to prepare them for UVMapping+texturing but also most important,animations(which doesn't apply in this case.)
Complementarily,since this is intended for realtime using a screenshot from within the engine(or just loaded in DB) is much more relevant than a render that is raytraced,filtered,AA...
In fact,a texture does not appear the same at all than in an engine than on render,this is why it is much more recommendable to preview your texture in a realtime viewport at creation stage than making renders of it(if available of course) to preview what it looks like.
Finally,I posted this as an information for everyone and not just aimed towards you.(take a look around you're not alone doing this)
Keep the good models coming.
If I've seen it all before,why's this bus taking me back again? @_@