You will need to equip the Intimidation Mask to one of your loadouts. This mask essentially effects the reload speed of your enemies. When you are near and enemy who is reloading, they will reload slower than normal.
This achievement's 60 second requirement is cumulative so it does not need to be done in one match. With the Mask equip, simply play Multiplayer as regular and it will unlock overtime.
If boosting, simply have your partners stand in front of you and have them shoot one bullet at a time, followed by an instant reload. If all players have the Mask on, everyone can the achievement in one match.