The Operation 5: Hollow Storm Title update for Gears 5 has 18 achievements.
Collect 20 Epic character skins
Own 360 weapon skins
Own 50 character skins
Got 100 eliminations in Nexus
Completed all chapters in one Act while Batista as Marcus is enabled
Completed a Versus match in each of Regency, River, Nexus, Clocktower, and Gridlock
Got an elimination with the Scorcher
Reached level five on any one Assault, one Tank and one Support
Completed a chapter of Campaign while using a Custom Skin
Killed 10 enemies using a weapon with a Custom Skin
Completed all chapters in Ironman Mode on Experienced difficulty or above
Completed all chapters on Inconceivable difficulty
Maxed out each of the Anchor, Gunner, Pilot, Veteran, Brawler classes
Won a Ranked match in each of Regency, River, Nexus, Clocktower, and Gridlock
Collected first Heroic skin
Beat the Gold Time in a Featured Escape
Got 400 GP in a Ranked match from eliminations
Got 100 GP in a Ranked match from ring breaks