Using Turtles, I've notice the subtle things Bungie has put into this game, like wind effects in your ears when you sprint or are in a cave.... this is the first time I've seen this real life application used. It gives a sense of immersion that I haven't experienced before. I'm level 7 and did the first moon mission... which was actually really intense by myself. I also got my first look at vehicle play.... screw the Sparrow!
My hand canon eventually became obsolete and I went to a pulse rifle until I got a newer canon... It only has 3 shots, but I'm addicted to the power per shot now. I might go with shotgun as a true back up rather than the long distance luxury sniper rifle.