Note: All theory and could be entirely wrong. Once falling into the pit, you fight through a few tunnels of hive bla bla. First boss: A circle will appear on the floor in which a certain number of guardians must stand on to activate a bridge. Easy but there may be something chasing you. After getting by, maybe 4 circles, is a room which you must hold off hoards of enemies. In each wave, something will spawn in which a certain number of guardians must move to destroy. After this you go on to the next room where you may have to sneak and/or jump by apparitions past. After completing, entering Crota's room, he will be in a protective circle in which the guardians must destroy pillars that pop up, like whack a mole. After this, Croat WILL chase you and after a time divide the room into sections which is a trap and the other guardians have to destroy a device thAt can lower the trap. At the end, after defeating Crota, his farther, Oryx, will speak and then you will be finished. Again all theory but hopefully it's cool. Thanks for reading!