This is quite a challenging mission in the game, so it is important to discuss it. It is all about how well you can control the RC helicopter in a limited space. First thing to do is to ensure that the in flight controls are set in a way that they are easy for you to reach. The most important controls that should be easy to access are; the ‘accelerate’ and ‘brake’ icons which you use to increase and decrease the height at which the helicopter is flying and the clockwise / anti-clockwise icons to help you rotate in the direction you want.
The next important thing to do is memorize the locations you are supposed to visit using the RC chopper. There is the ‘Top Fun’ van where the bombs are, there is the central staircase in the building, and the four locations where you need to drop the bombs. Before you can do the final run, you can decide that the first few tries will be to study all these locations. It takes practice to control the RC helicopter and understand the layout of the building and you will probably crash a few times.
It is better to work from the bottom as you go up. Know what works for you. It is easier to fly up as opposed to climbing the stairs as you would on foot. Flying straight up saves you time. Keep moving and don’t pay too much attention to the adversaries but focus on moving smoothly. Avoid wasting time trying to kill them with the helicopter rotors. However, it is imperative that you are able to evade attack from the adversaries.