Classic Order costume...
	Double Jump...
	Feather Fall...
	Knight Of The Order costume...
	Nightmare difficulty setting...
	Various Steam achievements...

Successfully complete Story mode under the Apprentice or War Mage difficulty setting.

Successfully complete Story mode under the War Mage difficulty setting.

Successfully complete Story mode under the Sorceress difficulty setting.

Successfully complete Story mode under the Nightmare difficulty setting.

Successfully complete a campaign under the Apprentice or War Mage difficulty setting. Note: The Nightmare difficulty is unlocked separately for each campaign (Story, Classic, and DLCs).

Complete the following tasks to unlock the corresponding achievement. To view your achievements and stats in Steam, select "Community", then "My profile", then "View all my games", then the game and view stats.

Achievement	How to unlock
All Aboard	Kill 1,000 orcs with minecarts.
BFFs	Reach wave 40 in a co-op endless mode level.
Big Spender	Spend 100 skulls in the tome.
Cash Money Skulls	Spend 1000 skulls in the tome.
Droppin' Hamiltons	Spend 10 skulls in the tome.
Freedom!	Use the freedom trinket to break a co-op partner out of a stun.
Friends 'Till the End	Complete Twisted Halls in co-op.
Halfway There	Complete campaign, Act 1.
I Could Do This All Day	Kill 25,000 Orcs.
I'm So Awesome	Complete campaign, Act 2 Nightmare.
Impossible!	Reach wave 50 in an endless mode level.
Indecisive	Respec your character.
Kingdom Rush	Beat a nightmare level using only weapons, trinkets, and the dwarf, archer, and paladin minions.
May I Have Some More?	Kill 50,000 Orcs.
MMMMONSTER KILL!	Get a 25 kill streak.
Perfectionist	Earn 5 (base) skulls on every campaign level on War Mage difficulty.
Pot of Gold	Get a 10x or higher combo.
Predator	Collect 30 dropped skulls.
Queen of the Orcs	Charm 100 orcs as the Sorceress.
Restoring Order	Complete campaign, Act 2.
Six Degrees	Catch the Robot disease.
Stay Classy	Complete all classic levels.
Ten at Once	Get a 10 kill streak.
Thanks Bro	Heal an ally in co-op.
They Just Keep Coming	Reach wave 25 in an endless mode level.
Tough Going	Complete campaign, Act 1 Nightmare.
What is Best in Life?	Use the berserker trinket to reduce your health below 15%.