Not much of an empire yet. I'm in my first turns but with the second battle I managed to eliminate Hannibal.
In the first battle he lost around 50% of his troops and I lost 60% (I sound the retreat when I couldn't damage him anymore.) He tried take over Arretium. In the second battle he found him self in an hammer and anvil situation between the defenders of Aretium and the new arrived troops from central and south Italy. He had only around 2000 troops remained. His deffeat was inevitable. Now we regroup our troops go to free Ariminum, and then South to teach some discipline in those rebels that had the guts to revolt..
EDIT: Playing in H/H with 0 turn recruitment, on ALEX
EDIT2: The battles are just AWESOME! Long with no easy ways to win them. The AI is much much smarter (Hannibal kept at least 1/3 of his army in reserve and send units where it needed to reinforce or take the advantage. Great!! That long battles and a better AI I expected to see in RS2!!