you're probably not missing anything, the error room is the last room. this wasn't even supposed to be a published game, just a joke between a few friends :)
Ah. ok. I was going to make a video of it but it was so short I decided not to. Ended up finding the krusty cellar one in the process tho :)
that's a tradeoff i'll take any day, bortal 3 is like 1 minute long if you know what you're doing
