Fallout Tactics: BoS → Kansas City
So, gather your forces and head to the location—the large building where all this crowd is located. As soon as you reach the western gate, don't just stand there; get your men into position as quickly as possible, as the super mutants are about to attack. You can plant a couple of mines before the first wave of attackers (there are four of them right there, in a crate).
Besides the western gate, where your squad is currently stationed, there are also gates to the north and south. The least dangerous area will be the northern side, because, in addition to the militia, the mines planted there will help hold back the onslaught. However, the other two directions will be difficult. Such a crowd of blockheads will press on you that it's best to switch the game to turn-based mode.
Once the attack is repelled, you'll receive a new mission: find and eliminate three Super Mutant commanders who have taken up residence nearby (their locations are shown on the map). So assemble a team and begin clearing the southern half of the map. After my men repelled the Mutant attacks, the Heavy Weapons Specialist leveled up just in time. You need to get the Heavy Weapons perk or have a Strength of 9 or higher, and then you'll grab the Browning M2!
In the house to the southeast, where one of the commanders is holed up, search the chests; you'll find the most powerful automatic shotgun in the game. Especially if you use purple ammo, which has an armor-piercing effect. At close range, a mutant will be taken down in one or two bursts.
Once you've cleared the sector, talk to Bishop, and in a few seconds you'll receive confirmation of mission completion. All that's left to do is collect the loot and exit the area. Now, Osceola and the mutant leader.
See also:
Fallout Tactics: Explosives and Mines