You had to do the quest to get thorn using atheon's epilogue because you only completed the Vault of Glass once and it was the "best" void gun in your opinion. You had to farm relic iron on mars where the relic iron is the same color as the landscape and doesn't stand out unless you stand right on top of it. Never forget Randal The Vandal The loot cave and all the friends that were made there The blue halo from the nightfall and how badass you felt when you saw other guardians without it Needing to do the bounties every day to try and rank up with your factions