Interact with a Supply Cache
Survive in No Man's Land
Kill 1000 Infected
Complete 5 Runs
Collect 25 Supply Bags
Kill a Flamer
Craft an item at a crafting station
Lower the bridge in Leighton City
Trigger a trap, with fatal consequences
Open the gates at the HERC checkpoint
Collect 100 Knowledge
Kill an Armored Charger
Reach Hell
Reach Level 10
Craft an improvised weapon
Complete the main quest line
Reach Level 100
Kill a Charger
Complete the tutorial
Reach The Sunken City
Discover the modified HERC device
Craft 25 items at a crafting stations
Acquire a mutation
Reach Level 50
Kill a Burster
Kill a Volunteer
Use Antiviral 25 times
Activate the radio tower
Kill a Spitter
Survive a Horde
Died 10 times
Spend Knowledge points to max out a skill upgrade
Reach The Mountains
Purchase an item from the travelling merchant
Kill a Leaper