Jump onto the platform at the bottom, and go into the nearby 'Ticket' building to the left of the gondola station. Next, attach to the Sky-Line again, then go down to the next Sky-Line below. Jump onto the platform on the right from the Sky-Line, and grab the lockpick on a wooden plank under the stairs. Then, go down another set of stairs, and use the right Sky-Line. In the 'Return To The Hall Of Heroes' chapter (approximately two hours into the game), immediately after exiting the Hall Of Heroes and going down two sets of stairs, possess the Dollar Bill vending machine on the left side, and take the Silver Eagles. Note: Enabling this code will unlock the 'Should Auld Acquaintance.' achievement, and will not prevent other achievements from being unlocked. The mode's name is a reference to System Shock 2, one of the precursors that inspired BioShock, which was released in 1999. If you die, you must have the proper resources needed (like money) to revive, or the game will be over. Ammo is scarce, and health is more important. You must stick with the specialization you choose, and your actions will be ruled by that choice. In 1999 mode, the game is more difficult. Alternately, successfully complete the game. At the main menu, press Up(2), Down(2), Left, Right, Left, Right, B, A to unlock 1999 mode.
