For solo runs You should be able to save yoyr progess when you want to get off just click a (Save progress) button or have a auto save every 5 minutes. (You must have 75% or more hp to save) and you will start off at the last check point (safe zone) and any if you loot anything beyond the checkpoint you left off at (it won't save or yoy csnt collect bonds or just no items or zombies will be there) Is this a goated suggestion?