"Vengeance," when viewed alone, is a great and entertaining TV show. However, when compared to the first season of Spartacus, "Blood and Sand," and the ensuing prequel "Gods of the Arena," it doesn't hold up as well. I would give those two season a 10/10, while this one would be more of a 7 or 8 out of 10.
Some of the greatest moments of the two earlier seasons were the gladiatorial battles in the arena. Since the plot of "Vengeance" has moved beyond the arena, those moments are gone. Instead, much of plot involves Spartacus' rebels running here and there, attacking Roman soldiers and hiding from them at the same time. Obviously, this can become a little tedious, but there are still enough awesome fights and shocking plot twists to make the season interesting.
Also of note is that Liam McIntyre replaces the late Andy Whitfield in the lead role of Spartacus. Andy did a tremendous job in the first season (one of the best acting jobs I've ever seen), and his tragic passing robbed the world of a great man. However, Liam fulfills the role quite well. This Spartacus is different than the Spartacus of the first season, but I actually feel like Liam is able to portray the new grittier general-like Spartacus better than Andy would have, whereas Andy played the first Spartacus better than anyone else could have.
**NOTE: This series contains very graphic violence (blood & gore), adult content, and language. Also, this blu ray contains extended episodes that contain even more graphic content at times.