Overdrill

Overdrill was a secret vault in World Bank, containing 50 bags of gold totalling up to. Overdrill should not be attempted unless your crew has at least an hour to complete it.

Note: Overdrill has been confirmed in the Notoriety Discord server to return in the First World Bank revamp.

Preplanning
Overdrill required four heisters to assault the bank on either Overkill or Death Wish difficulty. It is recommended that all heisters wear the Improved Combined Tactical Vest, one equip medkits, two equip ammo bags, and the fourth equip sentry guns. All assets except for body bags should be bought.

Doing Overdrill
Players should start out by assaulting the bank as they would on a normal heist. Grab the thermite, place it in the vault, and wait until it opens. Each heister needs to collect a hat in order to reveal the Overdrill vault. The hats will only appear after the vault room gate has been drilled through and if there are still four heisters in the game.

The hats are:
 * The Outrageous Builders Club foreman hat in the lobby (by the tellers).
 * An apple on a round table by the staircase.
 * A skull upstairs on a table. There are a few chairs and a television nearby.
 * A policeman's hat on top of a computer by the vault room gate.

Only one hat can exist at a time. Once one hat has been activated, it will disappear and another one will appear. The order in which the hats appear is random.

Attempting to activate a hat after having already activated one will yield the message '"This instrument is too powerful for you alone." 'This indicates that four heisters are required to activate all four hats.

Once all four hats have been interacted with, the vault will be revealed. The vault takes 20 minutes to drill open. It is recommended that a heister with the aced Drill Sergeant skill starts the drill.

Completing Overdrill
The first time you complete the heist after successfully drilling into the vault, you will receive the Overdrill badge. Totaling the cash from the main vault, the deposit boxes, and various other loot, each heister should earn roughly, as well as a thank you message which reads: "Thank you for playing! I can't thank you enough so I decided to pay anyone who dedicates this much time to a single Heist exactly 50 golden bars. Hope there is still four of you! (I'd seriously suggest using the vents.) <3"