Halo 5 4-Player co-op

Can anyone help for this achievement.
Achievement: Harbinger: Complete The Breaking on Legendary difficultly without the entire fireteam dying.
send me a message on Xbox if you’re willing to help and/ or have other players you prefer to help as this achievement is not for beginners but pro’s.

This achievement is not as difficult as you think.

That’s probably why it’s only worth 10G.