For destroying 5 buildings to build a new one instead

For collecting 20 barrels of water

For removing an obstacle with explosives for the first time.

For repairing 2 suspension bridges

For searching 20 ruins with rescue dogs

For the flood drainage using the power pump in level 36

For repairing the railway

For extinguishing 9 burning turf swamps

For repairing 12 electric vehicles

For building 10 hospitals

For driving away all marauders from the city in level 18

For 10 delivery orders in level 30

For fixing your first street lamp

For removing all debris in level 29

For repairing 25 stores

For feeding the fire with firewood

For extinguishing the fuel warehouse in level 33

For removing the smog over the city

For driving away 10 snakes

For rescuing somone from the water with dogs for the first time

For shutting the valve off and stopping the dangerous gas leak

For launching your first weather balloon

For plane evacuation

For calming your first three ostriches

For extinguishing the crash site

For removing all obstacles in level 43

For repairing 5 helipads

For freeing workers trapped under the mud flow

For sending the boat on its maiden voyage

For saving 10 cats. Careful, they may scratch!

For repairing 5 power stations from the start of the game

For returning the stolen parts in level 62

For removing 15 balls of lightning

For repairing all lightning rods in level 6

For repairing buildings destroyed by snow whirlwinds

For fixing your first radar

For repairing your first alarm system

For launching Dr. Ross’s assemblies

For clearing contaminated soil sites

For saving 7 dolphins from nets

For cleaning up the pond

For planting 5 trees

For removing all mold in level 29

For your first production of magnetic cloth at the plant

For removing static from the water in level 9

For finding your first disconnected driller

For stocking the pond in level 21

For building 5 magnetic tents

For collecting all broken electrodes

For saving 25 animals from thirst

For launching the satellite into space

For saving all dogs in level 14. Careful, they may bite!

For delivering fragile goods

For catching 5 quadcopters