Started on Heroic by myself...like the guns, although I ran out of ammo on my scoped machine gun almost straight away.
Another note...trying to shoot a Brute in the head then melee kill doesn't work quite as well for an ODST as for Master Chief...got OWNED!
The AI is still as impressive as ever, as enemies running away in multiple directions, then circling back to get you in a pincer.
Agreed the graphics don't look amazing, but they are still pretty good, and not the reason why Halo stands out.
So far I am quite impressed have to say.