Like other roguelikes, dungeons are randomly generated. Except these have sets separate from each other, with bosses at the end of them, making for a more casual-styled approach. That said, it's still brutal with traps and ambushes. Thankfully though, you can explore with two characters at a time, and when both die, they only lose gear, not their levels or stats. Because of the quick-burst style gameplay, it is a bit easy. If you want a MUCH harder game, consider Shiren the Wanderer.