I also share the honor of completing the game on legendary alone. I decided to partake in this challenging task shortly after I have gotten the game because of a tradition that I have with every new halo game, beat it on Legendary First! The fundamental thing that will definitely grant you access to this prestigious club that I am sure a lot of people will mention is just to [b]Take it Slow[/b]. Use cover as many times as possible and [b]Live for the checkpoints![/b] As soon as you get to a checkpoint, take a break if you start to get frustrated. Grab some grub, lay down, mainly relax! For me the hardest part of the game was at the beginning when you first encounter the elites with only an assault rifle and a handgun. [u]The last bit of information is very important!![/u] [b]SKIP IT!!![/b] If it gets to tough, don't pull a master chief and keep going in guns blazing eliminating every single covenant foe that crosses your path. [b]Its not possible in the Legendary World![/b] Usually most of the time it may seem that killing everything is the only way out. [u]Its not.[/u] If it looks like you can just save that grunt you have in your sights to live another day and still get on with your life, [u]do it![/u] In conclusion, don't be fast and stupid. [b]Be slow and methodical![/b] Take many breaks, and skip it it if a few enemies is all that stands between you and a checkpoint. Do this and this achievement and great honor [u]will be a breeze![/u]