This game is underrated, but it's an acquired taste and I get why some people dislike it. This 3D roguelike "dungeon" crawler is much like the Fallout games, if the entire game was Fallout cave exploring (however at a much faster pace than Fallout). Because it's a roguelike, the game is extremely unforgiving when you die, I'd even go as far as to say it's way more unforgiving than most roguelikes and the difficulty curve is steep. But once you understand the game mechanics and keep doing runs, eventually most of the lower levels will be a cake walk and you will have a lot of good content to play on your hands.

The game was so fun for me I eventually 100%ed it, and it was worth it as there are multiple endings and the achievement challenges are fun in their own right. So if you are looking for a difficult, but rewarding roguelike, I recommend this.