Overview
In This Guide I’m Gonna Tell You How To Unlock All Hidden Achievements In Hotline Miami.
Batman
To unlock this achievement, the player must complete Chapter 2, Overdose, while wearing Nigel, the bat mask.
Cat Fight
To unlock this achievement, the player needs to defeat the two panthers in the Final Chapter while wearing Brandon, the panther mask.
Eye For Details
To unlock this achievement the player must find all 16 puzzle pieces in the game.
Sewer Alligator
To unlock this achievement you have to find the Jones Mask at the end of Chapter 5, Full House. First, kill everyone in the building so that the “Go to car” message appears. Instead of going to the car, pick up the crowbar lying near the entryway and run around to the back of the building.
There will be a manhole which can be opened with the crowbar (simply walk towards it while holding the crowbar). Inside, the mask will be lying next to a mortally wounded man. Pick it up and finish the level, then revisit the sewer again in another playthrough while wearing any Mask and go to the car to get the achievement.
Smell Something Burning
This is a secret achievement which is unlocked by going to the second floor of the building in Chapter 6, Clean Hit, the player can see a thug sitting on a toilet. On the same floor a fireaxe can be found hidden in a container on the wall inside the main hallway. In order for this achievement to be unlocked, the player must kill the guard that is sitting on the toilet with that fireaxe. You will get the achievement once you enter the car.
The Boss
To unlock this achievement the player must solve the puzzle. Because to solve the puzzle you need all the pieces, the achievement Eye For Details is needed to unlock this.
This Is It
To unlock this achievement the player must first have completed the puzzle. Once the puzzle is completed, Biker can interact with the computer on the ground floor of Chapter 19, Resolution. After learning what the computer has to tell you, continue on with the epilogue as normal and complete the game. The achievement should be unlocked.