We offer also the Steam Login feature but it has to be set up by following these steps:
Register or Login to your classical Last Mortem Account.
In the main menu search for the "My Profile" button in the top right corner of your screen. Click on it.
Your profile details will show up on the right. Click on the "Link my Steam Account" and wait for the Success/Error message below the button.
If you were successful you will be able to from this moment login with your Steam. How? Close the game and start it again. Instead of writing your email address and password click on the "Steam Login" button and you will be logged in! From this moment you can log in to your Last Mortem Account by clicking one button!