Utopia Must Fall achievements

Survive for 7 days without taking any shield hits

Encounter and destroy an extremely rare enemy type

Destroy a giant floating invertebrate by any means

Encounter and destroy an ancient totem of demolition

Survive 5 consecutive days with the city shield offline

Fail to be rewarded any performance bonuses for an entire day

Launch 50 nuclear warheads (of any size) before the city falls

Reach the end of a day with an arsenal of 25 nukes before launching any

Survive a full day with the city shield offline

Completely destroy a giant asteroid and all resulting chunks without nukes

Destroy a bomber with a city-launched nuke during fly-over

Survive 7 days without launching, buying or researching nuclear weapons