I finished up butcher bay today (the one that comes with dark athena) and to be honest I thought it was really fun but the ending was stupid.
I hate how they put you into that dumb cryofreeze thing...I thought that was pretty stupid, especially when you escape, for the third time, and the "triple max security" is actually less than the single max from the beginning of the game...the whole thing just felt stupid after you get caught for the third time...from the stuff I did before,like taking out a riot guard and 6 guys at once, I'm pretty sure he could handle 2 guards and the president guy at the same time, yet he just stood there and got put into the cryogenic room. That whole thing was unrealistic, they would have camera's, etc. but I guess the point of riddick is that he > them by a mile in every aspect...haha.
Really though I might play through dark athena soon, I really really hate the direction of the first one though in 2~3 areas...I had to lookup the guide on gamefaq to figure out where to go, which I hate to do.