For removing sparking wires in level 1.

For demolishing any building to build a new one on its lot.

For removing sand whirls in level 2.

For putting out a fire in level 3.

For building a large bridge with the multi-purpose crane.

For sending off your first boat.

For repairing your first communication tower.

For removing an obstacle with explosives for the first time.

For removing the first meteorite shard.

For removing the mycelium.

For ordering the first delivery in level 8.

For healing animals in level 9.

For removing space spores in level 9.

For stopping robot aliens in level 10.

For launching the Neural Corrector.

For eliminating blizzards.

For fixing your first lantern.

For helping Ross and John.

For the first dog rescue of a person from the water.

For removing plane wreckage.

For disabling 20 of Armageddon's voice generators.

For ridding the city of marauders in level 21.

For turning off your first bucket-wheel excavator.

For collecting immortalite in level 27.

For getting rid of all the bats.

For cleaning the air of narcotic gas.

For catching 10 cultists.

For repairing 3 electric vehicles.

For driving away 12 snakes.

For removing mold in level 41.

For repairing the lightning rod in level 42.

For rescuing people with the lift.

For repairing the hologram equipment.

For clearing the pond of trash.

For repairing 8 helipads.