This is not a question or an answer but it will help a lot of people that want the second ending. It is really hard but you have to get all life upgrades and then pich up the water sword from the hour glass chamber.
Then go for the last level and you will have to fight the darhaka and not the empress. He is very hard and the water sword is the only sword to kill him and you will need the wind sword aswell which you get from the misty cave or some thing. You will have to fall down a hole but I don't no what one. hoped I helped.