Xenomorphs were very simple, just a grey drybrush on a black basecoat. Some chrome details, then a black oil wash over the whole thing. Finally I covered them in gloss varnish.
Great army shots. Titus needed to be defaced, great job, I love it. The Demon Prince looks very menacing, i'm getting Excaliber vibes (the old film, that golden masked bastard child bad guy).