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