For rescuing the doctors on level 12

For demolishing any building and then building a new one in its place

For using the ozonizer to clean water

For blowing up a huge chunk of meteorite

For using the crane to build a bridge.

For using Larry and Barry to rescue five civilians from ruins

For using the Power Pump to drain four floods on a single level

For receiving a train delivery on level 48

For extinguishing your first wildfire

For allowing the fuel to blow up on level 46. You'll get it next time!

For getting rid of every bat on level 42

For restoring 35 Hospitals

For arresting every crook on level 35

For receiving resources by plane

For restoring five sets of streetlights

For getting rid of every piece of the meteorite on the second bonus level

For restoring every House on bonus level 11

For keeping the campfire burning

For retrieving the civilians trapped on the water

For placing dynamite under the meteorite

For calling a plane to deliver medicine

For extinguishing the wall of fire

For turning on the streetlights on level 23

For getting rid of the snakes on level 27

For using Larry and Barry to retrieve civilians from the water

For shutting off the valve and stopping a dangerous gas leak

For using the lift to save civilians

For making more than 10 deliveries by plane

For evacuating civilians by train

For curing polar bears

For removing the plane debris

For removing every obstacle on bonus level 7

For evacuating civilians by plane

For using dynamite to blow up solid ice

For sending off your first boat

For saving every cat on bonus level 9. Ouch! They scratch!

For saving every dog on bonus level 5. Careful! They bite!

For removing 15 hot wires

For searching Dr. Ross' buried supplies

For removing every ball of lightning on level 13

For repairing every lightning rod on level 32

For removing every Dust Devil

For repairing your first communication tower

For repairing your first warning system

For starting Dr. Ross' device on level 45

For removing the vines off three buildings

For removing 30 piles of contaminated soil

For removing your first pile of meteorite debris

For collecting all of the ingredients for the antidote

For using the flamethrower