Halo Infinite

This achievement can be completed in the mission "The Nexus." Given that you have to melee hunters, it is easiest to do this on easy difficulty. You can weaken the hunters with weapons or grenades. When the piece falls off and their back is exposed, melee them from behind and it shouldn't take more than a couple of hits to kill them.

This achievement can be done solo and on easy difficulty.

NOTE: There are two methods you can use for this achievement. The first one is if you are doing mission replay and the second one is if you are doing this in a play through.

1. This achievement is very simple to do, but may require planning depending on what weapon you would like to use. For me, I chose mission replay on "Nexus", solo, easy, with the bandana skull on. I picked up a Hydra Launcher at a FOB before. Near the beginning of the mission, there is a chieftain with a ravager. This will come in handy melee wise because it has a bladed edge which makes melee attacks stronger. Once I got into the room with the two hunters, I shot six shots of the hydra launcher at each hunter, waited until they swung, pulled out my ravager and meleed them twice with it which killed them. Be sure to aim for the red fleshy backside of each hunter, which is where they are vulnerable.

2. Now if you do not want to use the hydra launcher and are doing this during a play through, you can pick up a skewer from a brute in the room where you have to kill all enemies in order to unlock the door. This room is right before the hunter section and is required to progress, so hopefully the skewer brute will not be missable for you. Same rules apply but with a different weapon. Shoot each hunter with the skewer, and then wait for them to swing and then melee their backside until they are defeated. Achievement unlocked!

NOTE: Bandana skull is not necessary for this achievement, and you can choose any difficulty you'd like. I just found the skull and easy mode helped me unlock the achievement in an easier manner. Good luck!

Let me know why you downvote if you do, and I will try to make this achievement better.

This achievement can be unlock in the mission "THE NEXUS". To get it, you have to progress until you face two hunters and defeat them with melee finishing blows.

Here are some tips:
- launch the mission on Easy difficulty,
- use a banished weapon equipped with a blade to increase melee damage (a ravager is available in the hunters' room),
- hit in the back to do maximum damage.

By anticipating, you can also collect an elite sword earlier in the mission.
It is certainly the most effective melee weapon.

Here is a video to help you:

In the level, NEXUS, you need to eliminate both hunters with melees. Luckily, sword and hammer kills both count toward the achievement.

Highly recommend loading in on the easiest difficulty, progressing to the hunters and work to remove the armor on their backs. Once their armor is removed from their back, you can melee the flesh part of the hunter's back to eliminate them!

Do such for both hunters and the achievement will pop!

This could not be easier.

Replay the mission Nexus via the Tacmap and select Nexus.

After the room where you have to kill all the enemies to open the door, is another room where two Hunters spawn. Simply kill the Hunters with a melee attack (whatever your melee button is) to get the achievement.

You can replay the mission on Easy with the Bandanna skull to get the achievement. It doesn't matter what weapon you use, as long as you're spamming the melee button on them.

Hit them in the back to make it faster.

Use the Thruster to make it easier to get behind them.