Sinspawn Ammes is the first boss in the game and is fought during the Attack on Zanarkand. Sinspawn Ammes will only use Demi during the battle. Thankfully, Demi will not KO you, as it will only take away 25% of your current HP value. This battle opens up with Auron having his Overdrive, which are like the Limit Breaks of this game (for those that have played previous FF games). These attacks typically deal higher damage than normal, sometimes deal additional effects, and often can also hit multiple times. The Overdrive meter is below your HP and MP, and once it’s full, press left on the command menu to access the Overdrive menu. Auron’s Dragon Fang requires you to press a simple sequence of buttons to induce an attack on all enemies, but you have a time limit. Dragon Fang should be more than enough to take out all of the Sinscales, leaving only Sinspawn Ammes left. Since it will only use Demi and that spell cannot KO you, there isn’t much worry here.