|The following is based on Fallout Shelter or Fallout Shelter Online and some details might contradict canon.|
The ground floor has a group of five raiders. If you take the elevator up, the floor above has another five raiders and another five raiders in the room to the left of that. The top floor has a group of four raiders in the room to the right.
If you head back to the ground floor and take the elevator down, there is a group of four raiders in the left room. The floor below that is the alpha deathclaw accompanied by two deathclaws. Defeat them for the objective, and you will be rewarded with a Mr. Handy. The room also has a random legendary junk and three bottles of Nuka-Cola Quantum.
If you take the far right elevator, there is a group of five raiders in the right room. In the far left room is the raider leader accompanied by four raiders. Defeat her for the objective. There is a legendary outfit recipe in the room.