Unlock the following Achievements by performing the corresponding tasks. After you unlock all Achievements, you will receive a code that you can submit for a chance to win a prize. Note: this contest is most likely expired.
HOW TO UNLOCK
4 the Horde!
Control 50 units at the same time.
At First I was Afraid
Survive over 30 minutes in the Castle Defense mini-game.
Blotting Out the Sun
Beat the Chinese campaign Level 7 with over 15 surviving Rocketeers.
Bull in a China Shop
Cast a Boulder spell which does not hit a single unit.
Can't Touch This
Prevent a unit dying from a Lightning spell with the Shield spell.
Win a mission in which the enemy attacked your base.
Cooking by the Book
Beat the Viking campaign.
Dying on the Edge
Sacrifice a unit whose remaining health is less than 5%.
Kill the Giant in the Aztec campaign Level 2 before it reaches your gold mines.
Beat the Viking campaign Level 7 without losing any towers.
Happy New Year!
Kill 3 enemies with a single rocket that appears after a Rocketeer dies.
I'm no Kung, Fool!
Beat the Chinese campaign.
Keep Your Lousy Army
Beat the Aztec campaign Level 10 without letting any Vikings reach your base.
King of the Stone Age
Kill all Vikings in the Boulder mini-game without killing any Aztecs.
Beat the Aztec campaign Level 8 without using the Boulder spell.
Beat the Chinese campaign Level 8 without killing any Berserkers.
Pity the Fool!
Beat the Viking campaign Level 10 without allowing any enemies to reach your base.
Planet of the Ninja Apes
Beat the Chinese campaign Level 3 without letting any Ninja Apes die.
Use Mind Control on a unit which the enemy Mind Controlled away from you less than two seconds ago.
Destroy the enemy base with a Boulder spell.
Son of Norris
Kill 46 enemy units with a single unit.
Techno Viking Dances Away
Reach maximum distance in the Berserker Run mini-game.
Destroy a tower that is being built with the Rage spell.
V for Veggies
Beat the Aztec campaign.
Where are the Kangaroos?
Beat the Viking campaign Level 4 by destroying the enemy base.