You decided to do a solo run for this one.
You bought a medkit from Dandy, and found a medkit on the floor after that, and a couple floors later, you found two boxes of chocolates.
You would silently thank Dandy for this, especially when there wasn't a blackout, because you didn't want to piss him off and die early.
You couldn't buy from him now, since you had no inventory space (you aren't sure if he was aware of this or not).
After he tried to sell you a bandaid, on floor 13, the lights shut off. A blackout. And then you heard that haunting music box that played when he showed up as Lethal Dandy..
You now had to complete 6 machines on a garage floor, all while trying to survive Twisted Cosmo, Twisted Tisha, and Lethal Dandy. Good luck... And hope you don't have to use your chocolate box and two medkits.