To get this achievement you have to beat London level without dying, but I found a trick how to get it without any problems.
If you die, just close game with X, when you are in window mode. Now you can run game again. You will continue level in a moment you ended, but game will not recognize that you died! That's mean you can die as many times as you want until you get this achievement.
You should get achievement after helicopter part, you don't have to do heist.