When you get near the submarine, descend underwater. If you're having trouble going underwater, release the 'forward' button and only press the 'descend' button.
Go under the submarine, and you will get a prompt to board Tony's submarine via the moon pool.
When you're inside, get your weapon out and take out the guards that you see ahead of you. One of the bonus challenges is to get over 15 headshots.
After taking out the guards, go down a set of stairs just after them and use the cutting torch to open the sealed door to the engine room.
When you get inside the engine room, you will find three guards. One will be to your immediate left above you on the platform. Two more guards will be deeper into the room at the end.
Once you've taken the guards out, you need to destroy the navigation systems inside this engine room. There are four navigation systems.
It is best to start with the one which is deeper into this room. This is because as soon as you destroy the last one, you must quickly find Tony's head of security. One bonus challenge is finding the head of security within one minute.
Once you've destroyed the final navigation system, backtrack to where you originally came from and go to the opposite end as quickly as possible.
The timer to find the head of security starts as soon as you see the prompt at the bottom of your screen. Getting to the sealed door on the opposite side of the room before the prompt helps us shave some time off.
There are three locations where the head of security can spawn, and where he spawns is always random. Jamar will also send you a picture of what the head of security looks like.
Since you have limited time to check all three locations, you can follow our optimized path to cover all three in one go while also moving towards the follow-up objective of this robbery.
Head of Security Location 1
When you go through the sealed door, you will find two guards to your right — one on the upper floor at the end of the stairs and the other at the bottom, just on the left side of the stairs.
Stay on this level and continue moving forward while clearing the enemies.
At the end, you will reach a dead end, which is a jail cell room. The head of security can spawn inside this jail cell room.
Once you've found the head of security, ensure that you get close enough for him to be registered as "located," or else the timer for the bonus challenge will continue to run.
He has a lot of health, so use a shotgun or explosives to take him out.
If you've not found the guard in the jail cell room, continue following our route below, which is also the way you have to go, regardless.
Head of Security Location 2
Leave the jail cell room, and you will find a set of stairs to your left, taking you to the upper deck.
Go up, and you will find some more guards ahead of you. Take them out.
Now, you will enter the mess hall area with the kitchen. Be careful of the two guards on your left when you enter the mess hall.
The head of security will spawn in the kitchen cooking area behind the counter.
Head of Security Location 3
If the head of security didn't spawn here, continue moving forward into the locker room area right after the mess hall area.
First, turn left and take out the guard with the shotgun.
Then turn right. This is the final possible spawn location for the head of security.
Once you've got the control codes from the head of security's body, move forward through the locker room area and exit from the right side.
When you get up the stairs, take out the guard on your right.
After that, turn left, which will take you to the submarine bridge.
Once you've taken care of the guards, insert the control codes to gain access to the submarine controls.
After that, access the helm of the submarine to take control of it and crash it onto the beach.
You won't be able to change its direction, you can only propel it forward by holding the vehicle acceleration button.
Continue moving through the bridge, and you will come across another sealed door and a guard on your left.
From here, no need to go down. Just open the sealed door to get to the vehicle on the landing pad.
When you enter the landing pad area, you need to access the terminal inside the security room next door to activate the landing pad.
However, before you do that, open your map and mark the location of the Paleto railway tunnels. We will go inside the tunnel to lose our 4-star wanted level. We are marking it ahead of time because as soon as we're outside the submarine, we will be surrounded by many cops. And we won't get a good opportunity to mark the location without getting shot at from all angles.
There will be one more guard inside the security room.
Interact with the terminal to activate the landing pad.
Once activated, enter the Fathom FR36 vehicle and leave the submarine.
When you're out, go to the custom marker to reach the Paleto railway tunnels.
When you reach the tunnel, go to the middle of the tunnel and stay there until you lose your wanted level.
Once you've lost the cops, continue following the tunnel to get out on the other side. You will come across another tunnel and go through that as well.
When you cross the second tunnel, you will cross two railway bridges.
From here, you can safely drive to your Salvage Yard to complete this mission.
With the Fathom FR36 successfully stolen and delivered, The McTony Robbery is complete.
Selling the Vehicle
Once you've acquired the vehicle, you can either sell the vehicle to Yusuf or salvage its parts for quick cash.
If you salvage the parts, you will get the cash instantly, which will be reduced by 20%. We do not recommend salvaging the car.
When you choose to sell the vehicle, you must drive it to the terminal. Ensure you do not hit anything when driving it to the terminal.
Bonus Challenges
Here's the McTony Robbery Challenges:
Total bonus reward: $50,000.
Successfully selling the vehicle and completing these challenges will increase your earnings from The McTony Robbery by a lot. For more Chop Shop content, check out our The Chop Shop overview.