Everything you'd ever want from a rogue like game, trust me.
Incredible art (especially if you enjoy dark aesthetic), the music gets a chef's kiss from me, witty commentary and wonderful characters, intriguing story, endless combos of weapons & powers, changing dungeon level layouts, actually challenging bosses (but there is an easier setting, if you wish to progress faster).
Kill mobs, make friends, pet dogs, decorate. Honestly it has marvelous reviews for a reason. It truly is a masterpiece and you can tell that devs put their heart and soul into this one.