A long cutscene plays and Aurora would then be thrown into the fight against Umbra. You can choose to flee from battle and farm enemies to level up some more, then fight Umbra when Aurora is a bit stronger. Or you can fight Umbra now.

15. Showdown against Umbra, Child of Light

Bring Aurora, Óengus, and Golem to the fight. Equip at least a Faceted Citrine in the weapon slot of Aurora to add light damage to her melee attack and equip a Brilliant Tourmaline in her armour slot to boost her magic defense. If possible, have a similar setup for Óengus and Golem as well. Start the fight by letting Óengus cast Taunt to direct all enemy attacks to him. Be sure to cast Armor of the Titans as well. Óengus should use his Kategida Cleave (All) whenever possible to help Aurora defeat Umbra’s two minions. Let Aurora first use an Unstoppable Elixir (All) to ensure she isn’t interrupted while casting Elevate Damage to buff herself. Use Aurora’s Slash (All) to help get rid of Umbra’s two minions. When Óengus is low on HP, bring in Golem and use his skill Paralyze (All) to help Aurora defeat the two minions. Use potions to heal as necessary and consume an Unstoppable Elixir (All) to make sure your party members are not interrupted while casting.

With Umbra by herself, let Golem use his skill Shock to deal some damage to Umbra and reduce her speed on the timeline. Aurora’s skill Light Ray should be effective against Umbra. Make sure you cast Elevate Damage beforehand to boost Aurora’s attacks. Use potions to restore HP, MP, and the light metre of Igniculus. Consume your potions generously. This isn’t the time to conserve your potions.