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Once you’ve grabbed one of the lasers and can’t lose your wanted level on your own, head to the location in the image above. This is the entrance to the sewer from when you scoped out the casino. Go there and hide inside underground until your wanted level dissipates.
Proceeding forward will eventually lead you to the checkpoint for security clearance. A few seconds later, you’ll pass through and must park the van in the designated spot. Upon arriving at the morgue, locate the valet’s corpse and retrieve the keycard. Position your vehicle directly in front of the entrance—it will prove essential when exiting later.
GTA Online Diamond Casino Heist guide
If you want to read a more detailed guide on each one of these missions, click on the link posted here. And with that, we’ve completed all of the prep work that is mandatory for every approach! Now it’s time we move on to the next section of this guide. Much like the unmarked weapons mission mentioned earlier, this setup mission can task you with one of several different objectives.
Big Con Prep
Exiting outside will place you immediately beside the race track. Numerous NOOSE agents will be present here, so ensure you’re wearing body armor. For the upcoming mission, acquiring the vault drills will be necessary. Surprisingly, these drills won’t be used in the *Gruppe Sechs* heist method. Nevertheless, finishing this mission remains crucial to completing the heist. Among all the heists introduced in *GTA Online* over the years, *The Diamond Casino Heist* stands as my absolute favorite.
All Heists in GTA Online, Ranked on Difficulty
At this location is a police helicopter, which you can use to escape the police. For a detailed walkthrough on how to get to it, please check out this video here made by YouTuber nightluck Gtamen. Once you climb up the building and both you and your partner get inside the chopper, simply fly to the yellow dot shown on your map. Avoid any other police helicopters and stay high in the air while you fly there. Take a left and walk down the hallway until you reach another hallway leading to the left. There should be a guard patrolling down this second hallway.
Which support crew should you choose for the Diamond Casino Heist?
Repeat this process until all the locks are broken and enter the vault. Firstly, when it comes time to do the fingerprint scanner hacking, the pattern that you will see on one door will be the same for all the doors that you hack inside. Make sure you and your friend are in sync and have already decided who will take which side. For instance, you can take out the left guard and your friend can take out the right one. Once you’ve taken out the guards proceed through to the double doors ahead of you.

Grasping the scoping aspect of The Diamond Casino Heist in GTA Online.
The guards on the opposite side are unable to spot you, so there’s no need to worry about them. Meanwhile, you should advance to the vault door’s farthest point. Inside, the guards are also blind to your presence through the glass—no concern needed. Exiting the vault grants you a checkpoint; now you can breathe easier. Retracing your steps through the corridor will bring you back to the security checkpoint.
As long as you stay clear of the police, by the time you reach the next objective your wanted level should disappear. Next on this full walkthrough for how to do the Diamond Casino Heist in GTA Online, we have the vault explosives prep mission. Go back to the whiteboard you were at for the last mission and select the option to the right of the thermal charges mission. Once the mission launches, you’ll need to head to a location off the coast of the map where you can salvage some explosives.
If you divide the work this way, completing the mission should be no problem. I recommend using a weaponized helicopter or an Oppressor Mk II if you have it. Just know that the NOOSE outfit has the benefit of making NOOSE agents friendly to you when you first leave the casino. Go to the Approach Specific Preps section of the whiteboard and select Exit Disguise. After you get in the truck and drive away, you should have a 3-star wanted level. I’ve found that the best way to get rid of it is to drive to the location shown in the image below.
Scoping out the Casino – Scope every entrance and POI
For aggressive, again, patrol routes make it easier but are never necessary. You can solo it, but it will be much easier with another person. If you don’t get them all you can just close the game and you’ll be able to do the mission again. Reinforced armor allows you to take more damage, so I would recommend it even if it makes you slower.

When you are choosing a gunman, there’s no need to spend any time deciding which one to choose as this heist is the silent and sneaky approach! You shouldn’t expect a lot of altercations and combat situations. Therefore, we recommend you choose KARL ABOLAJI who takes only 5% from the final cut.
