The twenty second mission of Metal Gear Solid V is quite unusual since it is less a challenging mission and more a Mother Base defense tutorial as well as the FOB (Forward Operating Base) creating tutorial. You will listen about the attack on Mother Base during the 21st mission however it does not mean you are going to defend it right away. Remember that this mission has no rank system so you may complete it however you prefer.
- OBLIGATORY (1/1): Eliminated the enemy - The main enemy is on the top of the R&D platform to which the stairs may take you. The easiest way to take this person down is to kill it with a sniper rifle, grenades or a rocket launcher.
There is no difference between completing this mission during a night or during a day. You don't have to keep being undetected since you are not going to be ranked after this mission. You are not going to take any buddy with you so you need to take some heave weapons with you such as a rifle, a grenade launcher or a rocket launcher.