Go to one of the windows at either side and break through them. Continue through until you see a vault door, Crack the vault. Cracking the vault requires players to turn the direction of the combination lock to unlock the door every time the light on the vault changes from red to green. Repeat this process three times. Enter the vault and collect the money. There are also several smaller vaults on the room's perimeter that must be opened in the same way as the main vault door for extra cash.