Butcher bay in this is basically the same as it was the last time (assuming you played it the last time), bar a few graphical upgrades. I still enjoyed this part since I loved it on the xbox and couldn't get it on my 360. If you haven't played Butcher Bay before then this game is worth getting.
Dark Athena starts extremely promisingly, with the sneaky sections as good as ever, and the close combat being very well weighted, like your actually doing the fighting, as opposed to waving fists at things until the bad people fall over. You can't pick up the weapons since they are attached to the drones, however you can remain stationary and use their guns, useful for breaking glass or getting a quick upper hand on a few enemies. This bit of the game was the part I found the most fun, and the ulaks were simply amazing to use! The problem comes when you start to pick up weapons, at that point it just becomes another shooter, instantly changeable with many other games out there. Sure you can still do the sneaking stuff a bit, but usually it's far easier just to gun down the opposition, and the game felt weaker for this.
Then there was the planet level, a gun that shoots mines that you can trigger yourself was a great fun for a bit, and I had fun shooting boxes round and things like that, but the spider things were pretty annoying. An enemy that's quite small, hard to see, and can gun you down in about a second if your not careful? It felt more like trial and error, memorizing where they were and progressing through. Overall this campaign felt like it started well, but steadily fell in both enjoyment and quality.
Multiplayer was something i was looking forward to, until the thought occurred that many of the weapons are rapid fire weapons. To be honest the multiplayer was not enjoyable, for me at least, except pitch black mode. The problem there was that it was great for whoever is playing as Riddick, and awful for everyone else. I'm not going to give the multiplayer another look, and I was extremely surprised to see how many of the achievements are for it, and how much they expect you to do on it.
Overall this game is still great fun, Butcher Bay is a bit dated but I enjoyed it and you might too, Assault on Dark Athena is great at first, and while not as good later on, it's still enjoyable, and the multiplayer is best avoided really.
If you played Butcher Bay and liked it, you should at least rent it, if only to see what the new one is like. If you didn't play it, then I heartily recommend this!