For destroying 5 buildings to build a new one instead

For launching 5 ozonizers to purify the water

For removing an obstacle with explosives for the first time.

For repairing 2 suspension bridges

For searching 10 ruins with rescue dogs

For draining floods using the power pump on level 3

For repairing the first train station

For extinguishing 5 burning turf swamps

For repairing 3 electric vehicles

For building 10 hospitals

For arresting 15 diggers

For ordering the first delivery

For repairing 3 electrical substations

For cleaning up the lake

For repairing 25 stores

For feeding the fire with firewood

For extinguishing the fuel warehouse on level 18

For eliminating toxic emissions over the town

For driving away 15 snakes

For rescuing 5 people from the water with dogs

For shutting off the valve and stopping the dangerous gas leak

For collecting 50 immortalites since the start of the game

For evacuating people by train

For treating 5 animals for panic