I strongly recommend you avoid this rogue-like. Since I can't really think of any pros that this game contributes to the genre, I'm just going to talk about the flaws.
This game is BRUTAL. I know rogue-likes are supposed to have you constantly die over and over but at least you make progress and learn a little more about the game each time you play through. However, I don't feel this way at all when playing this game. Well okay, I learned one thing.
This game practically eliminates 1/3 of your class choices. By attacking with warrior-like classes, you're guaranteed to miss most of your attacks and die within 3 minutes. With ranged classes, you, for whatever reason, have a higher accuracy and don't run as high a risk of getting hit, even with your health being low.
Speaking of which, it's almost impossible to get back any health you lose. In other games you find potions to restore your health and your armor is actually an important statistic. However, in this game, the potions are extremely rare, they don't always give you health (and the ones I've found give less than 10 HP), and with as much armor as I could find, I was still taking FIFTEEN damage from an enemy on the first floor of the game! Also, you start off with either 20, 30, or 40 HP, so...
Speaking of the floors in this game, the chances of completing a floor, or even moving on to the next floor, are low, really low. These floors are massive, and while that may not be the worst thing, there's no inventory system, and consider the flaws I've mentioned before. I've gotten to the second floor ONCE out of all my playthroughs, and naturally I lasted no more than a minute. My luck, huh?
Speaking of luck, the biggest problem is the randomized generation this game has. I'm not thrilled with starting a game, having two enemies appear in front of me, me missing my attacks, and dieing without making A SINGLE MOVE. Also, like I said before with the damage, I don't find it really fair that an enemy on the first floor could whittle down a chunk of my health before even going through more than five rooms.