Here is the full list of all 35 Hotline Miami achievements. It takes around 12-15 hours to unlock all of the achievements on Windows.
Unlock all achievements
Get A+ on all the chapters
Go to the car 60 times
Kill the crapping gangster with a fireaxe
Kill the panthers using Brandon the Panther
Perform every ground kill in the game
Kill three or more enemies with the same brick in one throw
Wear all masks at least once
use all throwing weapon at least once
Clear chapter 2 using Nigel the Bat
Perform a 12x combo
Collect all the masks
use all guns at least once
Collect all the puzzle pieces
Find Jones The Crocodile
Beat the epilogue with secret ending
Solve the puzzle
Kill two enemies with the same brick in one throw
Destroy 200 glass panels
Die 1000 times
Perform a 10x combo
Complete chapter five barehanded
Unlock all weapons
Beat the epilogue
Kill 1989 enemies
Beat the mainstory
Use a human shield
Perform a 8x combo
Kill 99 dogs
use all melee weapon at least once
Perform a 6x combo
Get an A+ on any chapter
Kill an enemy with a brick bounced against a wall
Throw a weapon at an enemy so that his weapon hits another
Perform a 4x combo