Well, ok then. I tried asking for help on Gamefaqs and people just yelled at me because of spoilers which is why I asked first. The battle I am having trouble with is the battle against Renne atop Amberl Tower near the end of chapter 7. The battle starts as a surprise attack and Renne uses her Rennede attack to wipe out my entire party before I even get the chance to do anything and if, by some chance, somebody survives, the robot things finish the job with their petrify attacks. I have been just kinda doing some character maintenance here lately, but there is really not much you can do once you reach the top of the tower except fight lesser battles. I have an anti-deathblow accessory on Joshua and an anti-petrify/deathblow accessory on Tita. I don't have any more appropriate accessories for Estelle and Agate and I am unable to get anymore as all chests in the tower have been looted and there are no accessible shops (or is there??). Also, I have upgraded Joshua's S-Craft to Black Fang and also upgraded Tita's S-Craft to the satellite thing (I forget the name). I have yet to retry the Renne fight since making all these adjustments as I want to get all four characters up to 100+ CP, so I can hit the ground running once the initial Rennede is out of the way.