Martin's Descent GAME
It is by no means an easy journey, death is almost certain. However, in the nature of roguelikes, the player must learn from their past deaths instead of just reverting to a save file whenever they make a mistake.
With no second chances, Martin's Descent is more about success through knowledge gained then time spent as with other games. It may frustrate some at first, but give yourself a chance to learn and you will be able to progress further and further each time.
Good luck.