Strong, Silent Type Achievement in Halo: The Master Chief Collection

During Data Hive, as you proceed further down into the sublevels of the station, you will begin to engage Brutes frequently throughout the tight corridors. For the purposes of this achievement, it must be stated that “in a row” is very strict; you cannot get any kills in between Brute assassinations or it will revert progress towards the achievement. 

With that in mind, this achievement isn’t too hard to grab regardless. Whether you’re playing on a lower difficulty or even Legendary, and whether you’re playing solo or with a group of players, simply wait until you reach a corridor where you can visibly count and see three or more Brutes. Once you know there are at least three Brutes in the area, get close to one so that he lunges for a melee attack. Side step their swing and try smacking them in the back quickly. If done correctly, it will be a one-hit kill. Now proceed to do this on two more Brutes and remember, any other type of kill on a Brute, or any other kill on a different enemy type in between the assassinations will revert progress made towards this achievement!

For a slightly alternate method that utilizes beginning this mission at Rally Point Echo, don't hesitate in checking out the video below, courtesy of Maka.