To unlock the Max Payne 3 So much for being subtle achievement and trophy you will need to kill first the four bad guys on the ground followed by other guys in the second level, third level and last the only one standing on-top. Is crucial that you begin from the bottom down and work your way up when killing all the bad guys in chapter 7 while using free aim going down the chain. Once you complete it you will acquire the So much for being subtle achievement and guide.
Need extra help with unlocking different achievement, trophies of collecting items then take a look at the Max Payne 3 golden guns locations and Max Payne 3 Walkthrough. Max Payne 3 Clues Locations, Max Payne 3 all tourist locations, Max Payne 3 All Faction Characters to make it easier locating different items in the game.