At the very end of the game, Alex will jump out of the chopper so you, Gianni, and Stefania will not get sucked in by the Pendulum Effect. Alex simply floats outside of the chopper and all you have to do is walk outside to her. Doing this wil force Derrick go into the Pendulum sphere and allows him to go with Alex to save her world. Right after this scene, a whole new set of credits with differnet music will appear.