"A glowing return to form for the JRPG that boasts one of the strongest battle systems in the genre"
"Xenoblade Chronicles begins in much the same way as its spiritual grandfather, the seminal Japanese RPG Xenogears, did some 13 years ago."
They had a lot more demand than they expected, it's been selling out all over.
You have to cast one of your abilities that debuffs break, then Reyn will cast his ability that does Topple then the fight should end, you may have to do it as part of a chain attack, can't remember for sure, when the blue bar is full press up on the dpad and choose the blue chain attack ability.
Use a chain attack with all 3 party members and try to topple him. Easiest boss so far for me...
edit: beaten