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