Are you talking about the round room with the knight-type guys? Big PITA, mostly because Ashley kept getting in the way. Do you have any mines? They work pretty good, but get the hell out of the way when they explode. Also, when they turn into Plagas lob a flash bomb at them- wipes them out instantly. The area I hated was the sewers, when those invisible Plagas thingies would just attack out of nowhere. Creepy.
