The Walking Dead Onslaught achievements

Unlock all Scavenger Sites

Reach Maximum Population (25) in Alexandria

Fully Upgrade Any Weapon

Finish Chapter 2: Strange Circumstances (Any Difficulty)

Finish Chapter One: "Desperate Days" on Any Difficulty

Find a Supply Cache in a Supply Run

Upgrade a Weapon in the Armory

In a Supply Run, get to the end without taking damage from the herd wall

Discover a New Weapon for the Armory

Complete a Scavenger Site

Construct the Town Hall in Alexandria

Bring a New Survivor to Alexandria