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Need to vent Go through all the ventilation shafts in "Test Chamber"

Castle Never Complete the Epic Dungeon, Castle Never

Maze Master Complete the Maze Engine campaign

Constipated 100th Strike

Let off some steam Find and turn the hidden valves in "Steampunk Party"

Ultimate Survivalist Defeat all the waves in any Survival Mode map

Archive Collector Collect all archives.

2 Mill Club Get "PAIN in the Park" and "D-Town Destruction"

Party Animal Start the party in "Steampunk Party"

Nothing But Skull Complete a brain transplant by throwing it in.

Flawless Guitar Solo 100% on a guitar solo on Expert, using only the solo buttons

AN-I-MAL!!! Beat the Impossible Drum Challenge

Mass Murderer Kill 80 challenges

Tamer of Demogorgon Earn Gold victory in Demogorgon

Challenge Savant Completed 25 Challenges on Expert

Zombie Smack Down! Clear the special stage.

Master of Destruction Get the all powerful weapon.

Horsin' a Clown Take the Clown for a ride on the Roller Coaster

Triple-Decker Tanks Hathor Area 12, Normal: Produce a compressed flow of tanks by collapsing the trail multiple times.

The Bachman-Turner Award Maintained deployed Overdrive for 90 seconds.

Fill Me In Completed all fills at 60BPM or higher, or half of the fills at 140BPM or higher

Million Point Club Earned more than 1,000,000 points in a single song

First Success Complete an alien organ transplant.

Tofu Smack Down! Clear the secret stage.

75 Stars Earn a total of 75 stars in single-player

Jump Shot Successfully pocket a ball after jumping over another ball.

Evil Dragon Godesses Not Welcome Defeat Tiamat

Virtuoso Beat the Impossible Vocal Challenge

Kiss Me Deadly Kill a human enemy with another enemy's body

Won't Even Need Glasses! Perform a corridor eye transplant losing less than 1250ml of blood

Don't Even Need A Bucket Perform a corridor heart transplant losing less than 900ml of blood

Open Really Wide Perform a corridor teeth transplant losing less than 550ml of blood

Brainstorm Perform a brain transplant in an ambulance in under 1 minute 30 seconds.

Beastmaster Complete all Layouts of Animal Pack

Helios Area 28 Complete Comet Helios Area 28 at Normal difficulty.

Stage Igniters Beat the Impossible Band Challenge

Infinity and Beyond Complete 100 different Layouts in ‘Infinity’ Mode

Blink And You'll Miss It Perform an eye transplant in under 2 minutes and 30 seconds.

Somebody stop me! Earn every Primary Light on Hard difficulty

Inferno Pool Ranked Victory Win an online ranked match of Inferno Pool.

On Rails Finish a stage without ever changing lanes

Glass Lass Break 500 panes of glass with any female launchable in Mime Toss

Life's Too Short Perform a heart transplant in an ambulance in under 1 minutes 40 seconds.

The Brains Of The Operation Perform a corridor brain transplant losing less than 750ml of blood.

Box Kill 200 Helios Area 22, Normal difficulty: Kill 200 units that have been boxed in with weapons.

Tunnel Vision Perform a corridor double kidney transplant losing less than 800ml of blood

Money Cup Master Win the Maloof NY Contest

Who Needs Sleep? Complete ‘Motion’ Mode without losing a single Life

Got Layout?! Play through 10 Network games on custom Layouts

Picture Worth a Thousand Curbs Complete both Maloof NY Photo Challenges