The Operation 4: Brothers in Arms Title update for Gears 5 has 24 achievements.
Escaped all Operation 4 Hives on Experienced Difficulty or Higher
Completed all Year One Escape Hives
Acquired any Weapon from the Fabricator in Escape
Woke-up in the Med bay while escaping a Hive in Escape
Won a match of Gridiron with an Operation 4 Hero or Villain
Got a Denial on an Enemy while they were inside your Endzone with the flag in Gridiron Mode
Killed an enemy using a planted Grenade in Gridiron mode
Completed a Versus match on Reactor, Blood Drive & Checkout
Completed 12 consecutive waves of Horde Frenzy with Baird & Paduk in your Squad
Escaped a Hive with Paduk
Won a Match of Horde Frenzy (any difficulty)
Completed a Featured Horde Map from Operation 4
Won a Match of Horde Frenzy on Master Difficulty
Master All Featured Horde Maps from Operation 4
Dealt 30,000,000 damage in Versus
Dealt Dealt 100,000,000 damage in Versus damage in Versus
Killed 25,000 enemies in Versus
Killed 100,000 enemies in Versus
Got 12,500 assists in Versus
Got 50,000 assists in Versus
Re-upped 40 Times
Reached Character Level 15 with 10 Characters
Mastered an Escape Hive and Horde Map from Operation 4
Ranked up to Silver in a Ranked Versus Mode