How do you beat Yunalesca in Final Fantasy X?

Answer 1

Its not a easy battle to win, she uses zombie and then full life on you and then you die, not to mention her mega death abillity. The way i always beat her is to just go with it, if your characters are zombied then her megadeath wont work on you, luckily she can only use 1 full life at a time, so always keep atleast 1 character inflicted with zombie.

she will kill your aeons in seconds so what i suggest you do is overdrive all of them before you battle, then when you use there overdrives on yunalesca you take a chunk of her life with you.

and once you defeat her, dont forgot to go down the stairs at the back of the room for a chest to appear with tidus's sun crest. you will have to get through dark bahamut later if you dont get it now.

Answer 2

Before the battle equip your characters. I would put your heavy hitters with dark-proof/dark-ward armor and your healers/item users with zombie-proof/zombie-proof Yunalesca is a very tough boss in Final Fantasy X. the trick is to have Yuna in the battle along with 2 heavy hitters like Auron, Wakka, and Tidus. In the first form Yunalesca will blind your hitters so make sure you equip dark-proof to them or just heal it with Yuna. (I recommend not using any overdrives in this battle just hit with your characters that do the heaviest damage and heal with yuna) Once you defeat that form Yunalesca will start using a move that turns everyone to zombie but just have only 2 people in the party have zombie-proof/zombie-ward armor on. You will need to have one person on zombie throughout the battle. If you can, just hit her to kill this form, but if your not strong enough use overdrives...not aeons. (MAKE SURE AT LEAST ONE PERSON IS ZOMBIE) When this form is defeated Yunalesca will use magadeath, but she wont be able to kill the person with zombie, so use a mega-pheonix. Bring your zombie back to life then start pummeling her with strong attacks, overdrives and aeon overdrives. soon enough she will be defeated.