Allow player to start from Maps after they've been found

[RockstarRaccoon]

I want the player of this game to be able to start from Maps / Chapters that they've gotten to without a save, like in Half Life 2. I was hoping I could use zscript to override the episode menu, but I'm not sure how to make it keep track of what Maps the player has gotten to.

Has anyone ever done something like this? Does anyone know how to make a variable to keep track of things outside of saves? (Maybe I could utilize the cvar / options stuff for this?)

Edit: It occurs to me that if anyone has ever made a system to record the player's personal best on a level, I could use that to see if a best has been recorded on the previous level, meaning the player has actually beaten it.