So there is 3 parts to this achievement:
1) Rangan with the fan
-Follow the mission story: Gone with the Wind.
-Make sure to sabotage the Fan
2) Wipe out Kale and Shah with the train
-This completes the "All aboard" Challenge
-Follow this video on youtube for it. All credits go to MrFreeze2244.
-Make sure to give the video a like and subscribe to his channel if this video helped you.
Optional This can also be done on Master Difficulty and is probably the easiest Suit Only Silent Assassin challenge of the game which can be helpfull for XP purposes
*** Spoiler - click to reveal ***
Press A when prompted during the kill cutscene to immediately exit the level
3) Kale and Rangan with a cement pipe
-For this you have to complete "The Suspsension Is Murder" challenge.
-Again I refer to a video done by MrFreeze2244. On this video he exclusively does the challenge. So no need for extra sneakyness / Silent Assassin to obtain your achievement
-Make sure to give the video a like and subscribe to his channel if this video helped you.
(Credit to Segendary Ty)