I changed my mind
They lock themselves up in a meatlocker or something like it. A suicidal attempt but without any other choice... Lee couldn't get out nor Kenny could get in. Kenny locks them up to protect them and dies after it. They can't open it from inside. Even if they could, there are lots of zombies outside.
They hug each other one last word, and then camera fades...
We are playing another character on Season 2 and we are opening that locker by coincidence.
Christa and Omid are all eaten by Lee and Clem. They are turning to the viewer cowered with blood.
What a premiere :P
Next week, I'll be so sad, I'm counting on it.