Nope, not yet sorry. I don't have a proper computer anymore. It'll have to wait until I get another one. I am actually internetting in a local EasyEverthing..
About that Halflife mod, it's a single player based mod in which you have to escape from an underwater base that's busy flooding with water. Really cool idea. Besides fighting off aliens, you also constantly have to flee the rising water (kinda like in that movie, 'Deep Blue Sea').
Unforunatly, the mod (they call SP levels mods in the halflife community) wasn't worked out properly and never really became a hit.
Soo, why not try to do something similiar with an Unreal map? Maybe you would finally get that 9 at Nalicity