You poof into existence right in front of the tomb, having no history, and magically know how to use your items and that you're supposed to help each other get to the boss at the end of the game.
No, I'm going to leave the backstory up to you, but we're going to just start with all of you coming up to where you believe the tomb should be. Once y'all have your characters together, I will give you a little bit of the Lore that you have uncovered. I would prefer if you all have been traveling together for a long time, and this tomb is just the next stop on your adventures. Once I hear your group's backstory (personal backstories are optional), then I'll give you a hook or three as to why you're going to the tomb in the first place.
To be honest, I've been thinking about what would happen after the game is run, if anyone survives, and I wouldn't mind just continuing the characters, following them on their adventures, and almost creating a "Living World" where you can just continue as you will.
But you'll have to survive first, and that isn't guaranteed.
Oh, and if someone dies and is raised from the dead, their level goes down by one. Cause life is a b****.