Bladder cancer even spread a bit to liver.What is the best treatment for it?

Hello, My dad has been diagnoised of colonal cancer 5 months back. But we wasted 3months in ayurvedic treatment. From last two months he is in hospital. He was on radiation treatment for bladder for one month.As he had a severe pain and in bad condition.He had colostomy surgery.He is recovering from that. But the cancer has spread a litlle bit to liver. Now doctors are suggesting to have chemotherapy. But i have heard bad stories about chemotherapy. Is it good to opt this treatment or do we have anything better?What aare the chances of people surviving from this type of cancer? Salma