Hey, If on Xbox try this method: [b]Go to your in game settings in Destiny > log out > switch profile > log back into account > check your achievements[/b] This method typically helps players on Xbox with achievements not unlocking when you have met the requirements for said achievement(s). Here are some more steps in taking if the method above does not work: - Restart Destiny - Restart Xbox 360 or Xbox one - Obtain the achievement once again by meeting the requirements once again - Clear system cache - How to clear cache on xbox 360: http://support.xbox.com/en-US/xbox-360/system/clear-system-cache - How to clear cache on Xbox One: here: http://support.activision.com/articles/en_US/FAQ/Deleting-Old-Files-from-PlayStation-4-and-Xbox-One-Consoles - Lastly, being patient as the trophies and achievements have been known to stay unlocked. Bungie is alerted and are looking into the matter. If on Playstation, unfortunately a method stated above is not available. You can try these troubleshooting steps in order to get your trophy to unlock: - Restart Destiny - Restart your Playstation - Obtain the trophy requirements once again - Clear your system cache (information on clearing your system cache can be found here: http://support.activision.com/articles/en_US/FAQ/Deleting-Old-Files-from-PlayStation-4-and-Xbox-One-Consoles) (same for Playstation 3) - Lastly, being patient as the trophies and achievements have been known to stay unlocked. Bungie is alerted and are looking into the matter. If you have any more questions, please feel free to ask. Good luck!