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