To activate the add-on, you need the installed Payday 2 game, you can buy it from the link https://plati.market/itm/payday-2-region-free/2262945
PAYDAY 2: Lycanwulf and The One Below Mask - Region free CD key Global
Key activation instructions:
1. Download and install the Steam program http://store.steampowered.com/about/, if it is not already installed.
2. Register an account with Steam. If you already have an account, log in to it in the Steam program.
3. Open the paid item in the My purchases section, or on the email. mail specified at purchase. Copy the key.
4. In the steam program, in the lower left corner, click on "Add game" - "Activate in steam ...", insert the key that you bought on Steam-account.ru, click "Next". The game is activated on your Steam account and will be assigned to it permanently.
5. In the Steam program in the "Library" section you will see the purchased game. It can be automatically downloaded from official steam servers to your PC, and start playing.

PAYDAY 2: Lycanwulf and The One Below Mask DLC
PAYDAY 2: Lycanwulf and The One Below Mask
PAYDAY 2: Lycanwulf
PAYDAY 2: The One Below Mask
Lycanwulf and The One Below Mask

ПЭЙДЭЙ 2: Ликанвульф энд зэ Уан Билоу Маск ДЛС
ПЭЙДЭЙ 2: Ликанвульф энд зэ Уан Билоу Маск
ПЭЙДЭЙ 2: Ликанвульф
Ликанвульф энд зэ Уан Билоу Маск