Stronkbuddy

Penguin-san Find a bag on a tree

Farewell to a Friend Put a friend out of their misery.

Making mountains out of molehills Kill 100,000 enemies.

Having fun with Mr. Bubbles Be cruel to Ella

Physical culture for rookies Make a roll 10 times

Healthy american family Meet your family

Dead man Unlock all the bad endings

Take his face Become Carver

Alright, Alright Survive until round 10 in Infection.

Whistle here, whistle there Whistle 72 times

Master Whistler Whistle 100 times

It Kill one clown

Silenced: The House Platinum Good job! Completed all tasks!

Back in the Field Acquire the Major's keycard in 'Deep Cover' within 90 seconds without being detected

So shiny Grab your first gem

Making a mess Break 5 vases

Survivor Survive until Round 25 in Outbreak.

PC Load Letter Use the 3D printer 15 times in a single match in Outbreak.

They Kill 5 clowns

The Ultimate Sacrifice In Zetsubou No Shima, retrieve the Skull of Nan Sapwe.

Blood Rights Kill Satan with Samson

You Can Pet The Dog Pet a Hellhound in MWZ

Heavy Ordinance Specialist Destroy 50 Aerial Scorestreaks with Launchers in Multiplayer

Geomtastic Earn a multiplier of at least 1000 on any level in Adventure Mode

Gymnastics for amateurs Make a roll 50 times

Stick Fighter Pick up a stick

Clown crowd Kill 10 clowns

What a headache Grab your first skull

Time to get used to it Die 10 times

Boy and his ball Ride a ball

Unmasked Defeat the first boss

Luxury Pick up 5 stars

Foo Fighter Clown Defeat the second boss

What a twist! Defeat the third boss

Tier One In a group of 4 finish an Operation on Challenge with 5 directives enabled.

Aerobics for experts Make a roll 100 times

The epitome of Super Earth Complete all Trophies.

Artful extraction Absorb your third Boss Stem Cell

Finished, without fear. Finish the game with two Boss Stem Cells active

High Wire Act Kill 10 enemies while using a zipline

Annihilation Get 100 Elite Zombie Eliminations in Zombies

Bullet doesn't like'em Break 10 totems.

Bloody Lust Kill Isaac with Samson

A Blank Card Kill Isaac with Eden

No Mo' Modi Get out of jail, but not for free

Clocking in Another day in paradise!

That's One Way to Do It... Destroy an airborne enemy helicopter with a Mortar Strike

Spirited Sparring Kill 500 enemies with Ultimate Skills as a Spiritborn.
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Perkaholic Have 9 perks active at the same time in MWZ

Controlled Chaos In Revelations, override all of the Corruption Engines before round 6.