The June Update Title update for Gears of War 4 has 15 achievements worth 500 gamerscore.
Get 10 assists or kills with the Hammerburst in a match 20 times (Public Versus only)
Complete a 25 or 50 wave variant of Private Horde on Insane with zero team deaths
Complete a 25 or 50 wave variant of Horde on Lift with 5 Soldiers on Insane
Get 3 headshots in one match with the Markza 10 times (Public Versus only)
Get 3 kills in one clip with the EMBAR 10 times (Public Versus only)
Get 5 downs with the Enforcer in one match 20 times (Public Versus only)
Get 25 Double Kills with the Boomshot (Public Versus only)
Get 2 kills in one clip with the Overkill 50 times (Public Versus only)
Get 3 Headshots and 20 Double Kills with the Dropshot (Public Versus only)
Complete a 25 or 50 wave variant of Private Horde on Insane without spending Fabricator power
Get 3 kills with the Retro Lancer without dying 20 times (Public Versus only)
Get 2 kills in a row with the Torque Bow 20 times (Public Versus only)
Get 2 Super and 10 Hat Trick Ribbons using only the Longshot (Public Versus only)
Get 3 kills with the Gnasher without dying 50 times (Public Versus only)
Get 10 assists or kills with the Lancer in a match 20 times (Public Versus only)