There are five possible results. Amdapor Keep and Wanderer's Palace are the "win" results, the super-easy runs that can't even scrape dents into my armor. Copperbell Mines and Haukke Manor take a little more doing and a bit more attention on my part, and my shiny white Paladin armor is looking a bit scuffed up by the end. But they're still not bad. They're certainly doable.
But there's always that 20% shot that I'm getting thrown straight into horror. The camera pans in to show a ruined lighthouse filled with crystals and a couple birds, and as soon as the cinematic ends, people are already asking "can we vote to abandon?" This seems to be the consensus: that it's not even worth trying to do Pharos Sirius start to finish. And when you look at the dungeon as a whole, it's not hard to see why no one likes it.