Complete the indicated task to unlock the achievement.

Achievement	How to unlock
1-800-CLEARED	Finish the game.
1-800-GETHELP	Finish the game on hard mode.
1-800-GODDAMN	Get A+ on all levels on normal.
A BOX FULL OF SHARP OBJECTS	Use every weapon in the game at least once.
ACHIEVEMENT WHORE	Unlock all achievements.
ASSASSIN'S CRED	Clear the 1st floor of NO MERCY with the silencer.
COMBO BEGINNER	Perform a 5x combo.
COMBO GOD	Perform a 20x combo.
COMBO INTERMEDIATE	Perform a 10x combo.
COMBO MASTER	Perform a 15x combo.
DEAD SILENT	Finish SUBWAY without the Gang Leader seeing you.
DON'T LET ANGER GET THE BEST OF YOU	Clear all of the Writer's levels without killing.
EXTRA! EXTRA! READ ALL ABOUT IT!	Get the big picture.
FAMILY BUSINESS	Clear a level with each of the Son's techniques.
FANATIC	Clear a level with each Fan.
FANTASTIC!	Unlock all the Fans.
FOLLOW THE SCRIPT	Do as the Director says!
GENOCIDE	Kill 50,000 enemies.
GOT YOUR BACK	Shoot two enemies during a chainsaw finish.
I'M COMING IN AND I'M UNARMED!	Finish HOMICIDE without using guns.
KARMA	Die 1000 times.
NUCLEAR WASTE	They won't reach the Nuclear Throne.
PERCUSSIVE MAINTENANCE	Destroy 100 electronic devices.
SNAKE CHARMER	Unlock all snake masks.
SNAKES ON A HEAD	Clear a level with each snake mask.
STARE INTO THE ABYSS	Unlock THE ABYSS.
THE BAR OF BROKEN HEROES	Meet up with the Biker.
THESE ARE MY RIFLES, THESE ARE MY GUNS...	Unlock all weapons for the Soldier.
WHAT YOU LEAVE FOR YOUR SONS	Unlock all of the Son's techniques.