^ Ah you do have a point. The AR was being abused all too much in Halo 3 so I guess I should be thankful that died down a bit. Gotta love the DMR and Magnum in Reach eh?
As for completing the game on solo Legendary, I finished it too. Took me around 16 hours all-in-all. Quite frankly, it was probably the hardest game I've ever played.
Lastly, for finishing a level on legendary without dying, I got that by completing mission 1 on legendary (The "Welcome to Reach" cutscene). Haha got Carter's helmet as an avatar reward just by doing so. You should have gotten it too actually