You're going to need a party with as many light armor knights as possible. Put Sajin in that party if you have him. You'll also need a few other parties that can use thunder techs and magic. Make sure these parties have decent movement ranges. This next scenario can be easy or REAL hard - set up your formation intelligently like I've outlined here, and you can make it easier on yourself.

So obviously, what you want to do is to break the statues before they can brought to life. That is your most important goal. Your light armor group should be able to speed around the map, and with Sajin's Raiden attack, you have a nice-sized lightning tech. As soon as you can, take out the clusters of statues at the top of the level. If you're good, you can take out 3 or 4 statues at once.

Watch out though, once all the statues have been brought to life or destroyed, the Lucrecs will start using Gigashock Lv. 10 on nearby good guys. These attacks are devastating - stay away! Take out the Ring Commander enemies first.