Master the combo system.
Defeat Nabu's ambition.
Send a worker flying 50 meters away in a sand storm.
Break the ice
Finish what your partner begins in a coop game.
Pressure your opponent in a multiplayer versus match.
Show no fear when destroying the cursed jars.
Kill 50 workers in a single game.
Crushed 20 workers with one giant boulder.
Kill a total of 10000 workers.
Great balls of fire
Destroyed a section of the tower with a meteor shower.
Use a tidal wave that spares cursed jar bearers.
Stop the construction of the tower when everything seems lost.