what am i ment to be doing in bioshock 2 ?

[movingtables]

I played the 1st game when it came out and now im on the 2nd.
ive totaly forgot what the goal of the game is ?

is it just to rid rapture of splicers?

 

[movingtables]

cheers guys.
doesnt really feel like a sequal to be honest.
feels like DLC lol.
ah well i have it on rental so no biggie £££