Rapture's descent on the Playstation 3 brings a new "Survivor" mode exclusive to Sony's sytem. Hardcore players will try to obtain trophy rewards with the new game mode, but of course, it won't be that easy. 2K Games developers talked about the PS3 exclusive in a Q&A session on their website:
Why did you guys decide to make this?
When we designed the original three difficulty modes of BioShock, we tried to define a spectrum encompasses as much of the shooter audience as we could, balanced as optimally as possible. However, we know there are gamers out there - ourselves included! - who are after a greater challenge than is provided by Hard difficulty. Besides that, a lot of Bioshock's game mechanics become more interesting when the player is under pressure to use their abilities in a creative and efficient manner. So the impetus came just as much from the desire to highlight a less obvious dimension to the game's mechanics, as to cater to the upper echelons of player skill.
Hit the source for the rest of the interview. BioShock for the Playstation 3 arrives this November.
2KGames: All About Survivor Mode