Widely known in small circles as AntiSquad, they are a military tactical response unit. These hardened military professionals, tired of bureaucracy, politics and serving the armed forces, have established a private paramilitary formation located in south United States.
Open the Steam client, login and locate the Games tab on the top menu. Click this and then select “Activate a Product on Steam…”
Enter your unique code that's displayed on the 'Orders' page of CDKeys.com and follow the prompts to activate.
Your game is now viewable in the “Library” tab and is available to download/install when you’re ready. You can find additional support for the Steam client here: https://help.steampowered.com/en/wizard/HelpWithSteam