Instructions
Proceed through the room with the saws on the floor.
Cross the bridge to find a Harpy flying around the base of a tower.
Move Kratos to a ladder at the right of the tower. Do not kill the Harpy.
Angle Kratos so the Harpy is between him and the ladder.
Attack with the Plume of Prometheus (Square, Square, Triangle) to make the Harpy fly into the air and land atop the ladder. It will then begin to bounce.
Do not move Kratos while the red orbs continue to fall from the Harpy. Remain there until the red bars total 199.