Can't touch this
Avoid getting hit during a battle sequence.
The bigger they are...
Defeat the boss in Act 1.
Juggle an enemy together with another player.
Vengeance is mine
Defeat the boss in Act 2.
Uppercut 4 enemies into the air at the same time.
Defeat the boss in Act 3.
You and what army?
Defeat the boss in Act 4.
Avoid the acid attacks during the elevator ride in the Queen's Tower.
Avoid the minecarts in the Mine level.
Complete all levels in multiplayer.
Tank me later
Complete the Tank Garrison level without using the tank.
Complete all levels as the Warrior.
Bow for hire
Complete all levels as the Ranger.
Spend at least 4 seconds on each page of the 'how to play' section.
Complete a level without taking any damage from enemies.
It's over 9,000!!!
Deal over 9,000 damage with a single attack.
Complete all levels without dying.
Complete all levels as the Mage.
Unlock 100 different weapons.
Kill the mini-boss in the Lost Metropolis without being hit by it.
Complete all levels as the Shaman.
There's no David
Kill 20 large enemies while riding a mount.
Avoid all falling rocks in the Citadel level.
Reach the max level.
Unlock 30 different armors.
The whole crew
Complete a level with help from each of the four classes.
Kill 100 enemies by using the environment.
Earn gold medals on all levels.
Gotta learn them all
Perform all the different combo finishers.
Never back down
Complete all challenges using one character.