Here is the full list of all 35 Hotline Miami trophies - there are 16 bronze, 14 silver, 4 gold and 1 platinum.
Unlock All Trophies
Perform every ground kill in the game.
Go to the car 60 times
Kill the panthers using Brandon the Panther
Use all melee weapons at least once
Hit three or more enemies with the same weapon in one throw
Use all throwing weapons at least once
Hit two enemies with the same weapon in one throw
Kill the crapping gangster with a fireaxe
Unlock all weapons
Get A+ on all the chapters
Clear Chapter 2 using Nigel the Bat
Perform a 12x combo
Complete chapter five barehanded
Use all guns at least once
Wear all masks at least once
Collect all the masks
Beat the epilogue with secret ending
Find Jones the Crocodile
Solve the Puzzle
Collect all the puzzle pieces
Die 1000 times
Destroy 200 glass panels
Kill 99 dogs
Beat the epilogue
Get an A+ on any chapter
Beat the main story
Kill 1989 enemies
Perform a 10x combo
Perform an 8x combo
Hit an enemy with a weapon bounced against a wall
Throw a weapon at an enemy so that his weapon hits another
Perform a 6x combo
Use a human shield
Perform a 4x combo