The Operation 5: Hollow Storm Title update for Gears 5 has 13 achievements worth 80 gamerscore.
Max out each of the Anchor, Gunner, Pilot, Veteran, Brawler classes
Collect one Heroic skin
Get 100 eliminations in Nexus
Get an elimination with the Scorcher
Collect 20 Epic character skins
Own 360 weapon skins
Own 50 character skins
Reach level five on any one Assault, one Tank and one Support
Complete a Versus match in each of Regency, River, Nexus, Clocktower, and Gridlock
Win a Ranked match in each of Regency, River, Nexus, Clocktower, and Gridlock
Beat the Gold Time in a Featured Escape
Get 2000 points in a Competitive match from eliminations
Get 1000 points in a Competitive match from ring breaks