Here is a baseline run for this mission and category. Using panic shots to lure the target next to the container would probably be faster, but that requires even more luck I have no patience for. At any rate, a faster time is definitely possible. This strat also has some randomness; the target's body may or may not be discovered on the way to the mission exit.

• 0:38 The direction the target faces here seems to be random, so the spot where I drag him can vary.
• 0:48 Whether the guard at the door notices a KO'd NPC or just walks to his usual spot also seems to involve randomness. Either way, I just tranq him.
• 1:08 With the proper item, you could boost to descend faster but I prefer avoiding glitches in this game.
• 1:18 For some reason, I cannot get the guard at the helicopter to panic with the unsuppressed pistol without being inside the building. Furthermore, directly shooting him seems to nullify silent assassin.