This is a pretty tough battle the first time around. There really aren't any secrets for winning this battle but here are some tips to make it go a bit better. First of all, get rid of the Dwarves around the tank. Next, the Hi-Ho Tank will probably cast Hi-Res on itself at least once during the battle. This means your Physical Attacks are going to be cut down about 30%. There's not much you can do about this so continue attacking and also use primarily Green elements. The Tank also has an attack that can do 30-45 damage to every player and it can use it twice in a row. For this reason you must keep your HP above 100 to survive. Other than this, you just have to fight, fight, fight. Good luck!

DragoonMaster

first have with you glenn. Then have serge and glenn in the highest element level to make the combo X-slash. Be warned to use this for wisely. mostly in the end of battle.

Theres no secrets or anything to it just kill the dwarves first.then work on the tank,it will recover alot so my advise is to use alot of yellow elements.Thats about it.