Yep yep yep! Nailbat and Silver Rifle I got there and used. I just equipped armor with a lot of materia slots. It balanced out. After all, Demon's Gate has 10,000 HP (WTF!) and a good Climhazzard from the Nailbat and a Deathblow materia using the Silver Rifle can whittle him down. That and Bahamut, Odin and Vincents Electric Frankenstien. (can't remember the name)