How to get it:
1. Log in to your Total War Access account or Register for Free (sign-up here)
2. Click on My Account in the upper navigation bar
3. Click on the Epic Connect logo and log in with your Epic account credentials
4. Grant permission to connect Access to your Epic account
5. "Account Connected" will be displayed in My Account screen
6. Once Access and Epic Accounts are created, head on over here to claim code.
7. Once you receive Unique code, head here to redeem code to your Epic account.
8. Sign into your Epic Games Launcher to begin download process