For those who say the game is hard to the point of not being fun: It's a roguelike, you're supposed to keep dying and trying again, getting better each time. It's by no means an impossible game, and once you become familiar with its mechanics, there are certain builds which could even make the game trivial. You're not going to win every run, but that is the beauty of it. It is strategically complex, and tactically interesting. Every run will be a little different. Massively replayable. By far my favourite in this genre. If you like challenging strategic/tactical games, this is a must have.
