If you show interest in the spear, she will offer you a reward to retrieve it for her. Once you retrieve it, it will be up to if you want to give her the spear as promised or keep it for yourself. The priestess will tell you that according to legend, the spear has been hidden in the caves nearby for years.

Are spears good in AC Odyssey?

Spears and Staffs

Fighting multiple opponents is almost a certainty, which makes staffs and spears very handy. The long reach and wide swinging style of Odyssey's combos make them great for crowd control. ... Generally, spears do more damage while staffs have more knockback power.

What happens when you fully upgrade the Spear of Leonidas?

The main purpose to upgrade the Spear of Leonidas is to upgrade your main character. Thanks to that you can replenish more health points by using active abilities. Also, every Spear level adds a new segment to the adrenaline bar. Thanks to that you can collect more adrenaline which is useful for challenging fights.