At first, I didn't enjoy this game. It seemed fairly random, simple, and frustrating. About 10 or so hours in, I started to understand how the game actually works. Then, things started to click. The game ultimately, is a puzzle game, and a very unforgiving, but rewarding one. Utilize your blackspace effectively, monsters are a resource, leveling up is a resource not to be wasted.
Having to kill 1 Level 10 boss seemed daunting, but when you think you've finally learned how to do it, they then throw 2 Level 10 bosses at you! How the hell am I supposed to beat that? But guess what? I did it. I was thinking, sweet, I know how to play this game. Then, the next set of dungeons appear. Defeat 3 Level 10 bosses. No way, impossible. how the hell do you do that? An hour later, the first of those dungeons falls. The next thing I know, I have to kill 10 of these bosses? IMPOSSIBLE, and do it 3 times with 3 different classes?
Every time you think you've learned what to do, the game surprises and challenges you to do 1 better. The quest system does get a bit grindy at times, and I have mixed feelings about the lockering system, but this is a great game that's not often on sale, but if you enjoy puzzle games, this will definitely fit the bill.