Well the storyline if you know Roman history is a mockery of Rome's history. The fact Boudicca has an Elephant and the Celts are in Rome alone make me begin to facepalm... Then with the Emperor dead no descendants and then with no one to return Rome to order as the Senate were too afraid to do anything and anyone to rally them died in the attack makes me wonder how Rome ever recovered after that as their show of power and dominance would have been crushed. Although I cannot remember who was the last nation/army to sack Rome. I think the Vandals and Goths sacked it. That was during the time when the Romans split into Eastern and Western Empires with their own Emperors. Usually worked together but usually failed as their superiority over Barbarians dwindled. Most of their weapons and armour over the years had eventually been given or taken by the Barbarians.
Also sometimes to save Roman lives they'd train the Barbarians to fight with their own tactics which backfired when they sacrificed Barbarians which pissed off their leaders who eventually took a stand against the Romans and because the many Roman advantages were lost they couldn't beat the Barbarians hordes. Sometimes did but would have also cost them too much to do that.
But it was a fun campaign though if you get past the mockery.
Taunting can be useful to keep your combo going inbetween rounds. I thought the executions are good but the effects were shocking. If I cut off someone's arm blood should be everywhere and that is what I would've liked to see, blood everywhere to the point Khorne rises up in the Arena gives you Gorechild and you continue to kill people and then there is more blood. Would have captured the brutality of that time much more if the effects were better.
More weapons than a Gladius and Shield would have been nice, Spears, Axes, Scythes, Hammers and all those other fun weapons and also more enemies like Greeks, Egyptians, Carthaginians and other similar non-barbarian enemies. Added in more playability...
I did find some of the taunts funny like "Prepare to eat shit, Barbarian." Especially when you finish a taunt and start slashing them down.
Also how many perfect hits do you get as most people I've played with get like two or three. I think I might be godly as I got to the point almost all my hits were perfectly timed. Only problem was my Executions weren't legendary as often as I'd like. Especially on the 7 execution combos. =/