You were dating Goob about... 5 months ago? He was tall, kind, cuddly, basically a perfect guy. But then Dandy started this mining thing, and then he went on it and went missing. Great.
So here you were, preparing to do the same stupid thing. You didn't exactly know why, but this feeling was NAGGING at you whenever you woke up and he wasn't next to you.
Floor one, two, three, four, ect ect, all the way to 13. You had been chased and bitten by ichor covered versions of people you used to know, and had to patch up with the occasional bandage or medkit.
At floor 13, nothing immediately jumped out at you and tried to slaughter you. That's a nice change... though you did hear soft sobbing. That's kind of weird, but it was probably just another twisted.
While you were doing one of the machines, something walked up to you. You prepared to run, but then something similar to Goob leaned down and smiled widely, trying to start a conversation. You just entertained it, and kept doing the machines.
He followed you, almost like a last dog, telling you how lonely he's been and how excited he is to be with you again. You just kept talking to him, hoping he would leave you a window to get the elevator.
When you completed the machines, the door opened. While the thing was distracted, you slipped away, walking over to the elevator. Suddenly, something grabbed onto your torso, pulling you close. It was the thing... looking at you with a hurt expression.