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