Infection Free Zone achievements

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

Defeat the military

Every type of vehicle operated

Survive 12 days on every of the recommended maps

Every type of building constructed

No farming for 50 days. Scavenge or eat people!

Deny 10 groups of immigrants

Survive 24 consecutive days on very hard difficulty

Survive 12 days with only one survivor

Survive 24 consecutive days without building walls

Kill 100 infected by running them over

Every type of weapon owned