HaloSpAz

3rd time was the charm apparently, thanks for the insights though

360, if i run it in coop with only me will i still get the lone wolf achievement though?

Yes. As i just said Infinity says I've completed it through Heroic, despite just beating it twice on Legendary.

So I've been bored this last week and decided to tackle Halo 4 on Legendary and doing so was an absolute blast. Until that is I finished the game to not get any of the tasty achievements for doing so. Upon further review I found out it says I've only completed Inifinity on Heroic (the difficulty i originally played when it released). So thinking it was some kind of fluke I set it to Legendary and play through it again. To no avail, I make it all the way through to Reclaimer and nada, still says I've only completed it on Heroic. What gives?