: A self-contained story set in Rapture's central computing hub. It features new weapons (like the Ion Laser) and new Plasmids (Gravity Well). It typically takes 3–5 hours to complete.
: A series of combat challenges where you must defend a Little Sister from waves of Splicers while she gathers ADAM. Progression & Strategy Tips BioShock 2 Complete Edition
: You can Adopt them to gather ADAM from corpses, Save them for a "Good" ending path, or Harvest them for immediate, larger ADAM rewards. Expansion Content : A self-contained story set in Rapture's central