Free Payday 2 DLCs minigame: https://www.overkillsoftware.com/pdtextadventure
When you receive key, click play again (for new key/dlc).
DLCs in the game:
Alienware Alpha Mask Pack
PAYDAYCON 2015 Mask Pack
PAYDAYCON 2016 Mask Pack
Sydney Mega Mask Pack
You can receive all 4 DLC.
You need to do this to get the specific DLCs:
Alienware Mask pack:Duke goes into the bank and places the thing under a table.
Mega Sydney:Duke goes in, drops it into a plant.
Paydaycon 2016 mask pack(Mega Clover):Dallas goes in, on the roof, jumps back to the roof past guard.
Paydaycon 2015 mask pack(King of Jesters):Dallas goes in, jumps on the guard, makes it look like an accident.
Warning: The site is slow if it gives you 502 just refresh it.