To me, the biggest deal about this whole thing is the new single-player content, the Assault on Dark Athena component itself. The PC version of Butcher Bay that followed the Xbox original got some new content, too--a brief, throwaway action level that lasted maybe 15 minutes. So I didn't expect a lot from the content being added in the Dark Athena remake. But I was dead wrong on that one. This isn't just a brief campaign tacked onto the end of Butcher Bay. It's an entirely new single-player experience that's purportedly just as long as the original game, and looks just as great as that one did. Butcher Bay wasn't the longest game ever--10 to 12 hours, say--but combined with Dark Athena, this will be a serious haul.
All the great combat mechanics from Butcher Bay are still in here--the brutally violent melee combat, the intelligent stealth system that turns your perspective a bluish tint when you're safely hidden. I would imagine all the shanks and shivs of the first game will make an appearance, but Riddick has a set of nasty new melee toys, the Ulaks, that will surely take center stage. They look like some kind of Klingon weapon, with blades curving straight downward out of a knife-like grip and ending in a wicked point. You can just imagine the stealth kill animations that will go along with these.
Don't think Butcher Bay is playing second fiddle to Dark Athena with a quick, dirty port job. The original game has purportedly been "virtually recreated" by Starbreeze's artists. The levels and character models have been given a new detail pass, or completely remodeled in some cases. The engine (an improved version of the one from The Darkness) is now using uncompressed motion data, giving much finer movements. So you'll see characters' individual fingers moving instead of the entire hand moving at once like a mitten, for example.
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neat 
