This is basically the first dungeon crawler that I have played, except Gauntlet: Legends a long time ago at a friends house in Fortuna, ND on his N64. The genre doesn't seem to really suck me in anymore as I usually play two levels of Dungeons and then call it quits for the night. Still, I have made it through the first two difficulty tiers and am just a couple levels into the Apocalypse tier now.
Overall it is decent fun, adequately polished, good value at $30, etc.