Hai guise!
The video was my second try when recording. I lost at the first one when I had no downs and was going to get the last bag...guess what...I fell off the stairs...lol but anyway...
In case you don't like videos or can't watch it right now, I will explain it all here just for you!!!! :D

The Mastermind class is very helpful for the way I do this mission! This is why I recommend having these skills aced: Inspire, Quick Hands, Transporter, Sprinter, and Drill Sergeant. You don't have to have them, but they are very helpful.

I usually use a Car-4, Deagle, Two-piece suit (to run faster), and my two medic bags. The two-piece suit makes you run much faster. I didn't choose a big suit because it gets pretty much the same number of hits before getting downed. I use a Car-4 because I am specialized in rifles and it is also a good weapon against bulldozers. The Deagle is for my Pistol Messiah skill, which saved me. The medic bags are essential.

What do I do after placing the drill?
The best thing to do after placing the drill is hide in the Doors Room. The best place is in the right-back corner when you enter. You can stay there for a while until bulldozers get in the room or the drill is disabled. Bulldozers will disable the drill a few times. Go fix it only when safe. Don't place the medic bags unless you need them.

If you're playing solo, your AI teammates will be very good for distraction. If you have players as teammates, don't be sad!! That means more bags for you! When a whole bunch of bulldozers get into the Door Room, make a run to the Indoor Fire Range room. Make sure you practice running! It is important to know how to run through cops before trying it with bulldozers. lol

When a whole bunch of bulldozers get into the Indoor Fire Range, make a run back to the Door Room, but make sure no bulldozers are blocking the doors before running.

After a few minutes the vault door will open. When that happens, go into the vault when safe and get the money. Move only one bag at the time if you're alone. This part is much better with players because you could do only one run to the van, instead when solo you will have to run 4 times!
Now why do we bring one money bag at the time? Because if you have 4 bags to take care of, you will be very slow and bulldozers will tear you apart. So it's better to move quickly, make them move and go around them. I usually place a medic bag behind the van so that I can make a run to the other money bags with full health.

You have to do this 4 times when solo, then you can escape in the main room of the Safe House!! Don't forget to interact with the baby masks around the map in case you don't have the achievement!

Thanks for watching guise! :D
Rate up the guide if you enjoyed and/or it helped you!
Also check me out on YouTube! - RedCobra1246 - for MANY other PAYDAY 2 videos! :)
Thought I could share my "How to stealth every stealthable heist" guide in the guide's description!

Have fun and Happy Halloweed to everybody!! :D