This. Halo Reach had nothing extremely violent except for one part, and that was extremely tame compared to say, Gears of War. There might have been a few curse words but I don't remember anything too bad. The only gore is blood which is off putting to some but to most its no big deal these days. Honestly the entire Halo series borders on a Teen rating, especially when compared to other video games these days.
Nothings right with you if nothings wrong with you.