Conquer one of the toughest setup missions in the Doomsday Heist Act 2 by securing the Mammoth Avenger.
The 'Avenger' setup mission is a challenging part of The Bogdan Problem (Act 2 Doomsday Heist) in GTA Online. This mission follows the 'Keycards' prep.
One thing you need to be aware of is that it will definitely take multiple tries to complete this mission. Make sure you have a full stock of snacks and armour prior to starting it!
Once you're inside the hangar, quickly go towards the right side. As soon as the lights turn off, turn on your night vision and then head up the stairs to your right, going up to the small office cabins. You will immediately have one guy in front of you as soon as you reach upstairs, so be careful and take him out.
Then proceed forward while taking cover using the walls of these small offices. Take cover at the edge and here another enemy should spawn, take him out as well. While you're taking cover at this wall, you will be able to see in the middle of the hangar and there will be a platform above. You will find three more of these mercenaries up there that you can eliminate.
Remember to keep an eye out for their guns' muzzle flash to locate them. From here, move to the second office and take cover by the edge of the wall, you will see two more soldiers here by the wall so take them out as well. You can also eliminate maybe 1-2 soldiers on the ground floor from here.