For this achievement, the game asks you to complete all the objectives for 007 difficulty.
So, from start to finish, leave the difficulty setting on 007 and proceed to finish the game. Along the way, the game will ask you to complete certain tasks in each level. All you have to do is find what they are asking you to look forward and download them to your smartphone or when deactivating bombs, something along those lines. You'll know when you are nearby the additional objective when an "i" symbol is on, located at the top of your radar. So, for example, in the Archives level, you are tasked to destroy the servers, so complete that if you wish to continue your path of earning this achievement.
Or, do what I did - set the difficulty to Classic 007, beat the game, complete all the objectives for each stage, and you'll earn that achievement, along with four others, including this one. Good luck!