Forum:The Ending - Spoiler Alert! Do not read if you don't want info

The ending was such a let down. The story was great! I just don't get it. I killed Atlas with the help of the little sisters and them Tennebaum tells me that the little ones offered me everything and I paid them with brutality. What was the pods popping up out the water and the little ones killing some of the guys on sure? Did I take over Rapture? I was at a loss for what was really happening. Help