In Destiny 1, The Lighthouse was only accessible by amassing nine wins without a single loss during a single Trials of Osiris elimination Crucible run. However, in Destiny 2, things are going to be changing. According to the official Twitter, "The Lighthouse was once reserved for Crucible champions. In 'Curse of Osiris', all players will discover it at the center of their journey".
How exactly that will play out remains to be seen. After the announcement, however, it's likely we'll hear more in next week's newsletter. We'll keep you posted!