Fantasy SciFi Opening Chapters?

Beginning with action is still the best way. If you don't grab the reader's attention quickly, you'll never keep it for later. That doesn't mean that you should be blindly throwing out many names and details to make it confusing and I don't remember any books right off hand that do that. This opening scene should be hard-hitting and low on details; those can come later. Most readers will not sit through a massive info-dump before the story actually begins.