Infection Free Zone achievements

No tree cutting allowed for 24 days, fuel engines usage disallowed. Deconstruction allowed. Green energy allowed

Every type of building constructed

No farming for 50 days. Scavenge or eat people!

Survive 24 consecutive days on very hard difficulty

Every type of weapon owned

Survive 12 days on every of the recommended maps

Survive 12 days with only one survivor

Defeat the military