Hidden traps will definitely kill the poor hero in Unfair Ninja. Repeat the platform levels several times before being able to escape them all. There isn't any possible way of previously knowing where he will fail next. Some traps are easy to get off, when the player is truly attentive to them, while others are simply deadly and instantly kill the ninja. Fail again and once more in this unfair adventure, always getting back to the beginning and using the Arrow keys to move and jump. Get the key and reach the exit door before finding some other difficult trigger.