Posted by: Voodoo Soup
Its not the perfect game, but the cutscenes are amazing (Bravo, Ensemble) and if you're OCD about achievements and awards like me, then they help with your Halo Waypoint Rank. Some of the achievements, though, aren't easy (And some require DLC).
Oh god you're not lying, legendary took me two months to beat and general took me two years to obtain but that is not playing all that much so most can do it quicker.