looks pretty good, always nice to have some additional Z-Hunter stuff, love it.
on a side note, everybody who likes such "old school-top-down shooters" should check alien swarm out http://store.steampowered.com/app/630/
its free, provided you have steam installed, just got released yesterday and its pretty cool for coop.
and alien breed impact http://store.steampowered.com/app/22610
this one is from legendary Team17 (surely a name for the amiga guys out there), there is a free demo and the price for the full game is ok imo.
I bought it on release and didn´regret doing so, its very well crafted, has a nice survival touch (play on elite!), great atmo, very solid graphics and sounds and is quite satisfiyng overall.
if you love Z-Hunter give both a go, and of course shadowgrounds but thats an older one...