The Digital Deluxe Extras includes the following items:
Additional weapon
Additional outfit
Original Game Soundtrack
System Requirements
Minimum : OS: Windows 7 Processor: i3-3220 INTEL or AMD Equivalent Memory: 8 GB RAM Graphics: Nvidia GTX 660/GTX 1050 or AMD Radeon HD 7770 Disk Space: 40 GB available space API: DirectX: Version 11
Recommended : OS: Windows 10 Processor: Intel Core i7 4770K, 3.40 Ghz or AMD Ryzen 5 1600, 3.20 Ghz Memory: 16 GB RAM Graphics: Nvidia GTX 1060 6GB or AMD Radeon RX 480, 8GB Disk Space: 40 GB available space API: DirectX: Version 12
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