Visit the Store Page of the game Company of Heroes 2
https://store.steampowered.com/app/231430/Company_of_Heroes_2/
Then just add the game to your account. 100% discounted until Nov. 17th.
You can also claim the DLC for this game on their official website
Victory at Stalingrad Mission Pack (DLC): https://signup.companyofheroes.com/
