The Experiment No. 115 is an enemy in Crisis Core -Final Fantasy VII-. Start the battle with hitting the worm with Graviga, followed by Hell Blizzaga. This worm will also cast Wall to protect itself, so if Zack is not equipped with Dispel Blade, wait until it wears off, then try to land some critical hits from its behind. Blizzaga Blade from behind is advised.Try to dodge it thread attack and keep away for a few seconds when it has used alert. If SPR is low, then run when it uses Quake or just hit it.