Six new classes have been added to Monster Slayers! Each one is unlocked for free when you complete the game as a basic class in Normal Mode, but if you want to unlock them immediately without completing the basic classes first, this DLC will immediately unlock the classes across all your save slots.

Go to: http://store.steampowered.com/ and download STEAM client Click "Install Steam" (from the upper right corner) Install and start application, login with your Account name and Password (create one if you don't have). Please follow these instructions to activate a new retail purchase on Steam: Launch Steam and log into your Steam account. Click the Games Menu. Choose Activate a Product on Steam... Follow the onscreen instructions to complete the process. After successful code verification go to the "MY GAMES" tab and start downloading.