Blood for Blood.

After Regalla's defeat, Hekarro granted Aloy the right to decide her fate. I chose to end her life, and Kotallo carried out the sentence immediately. Afterward, a messenger delivered a Focus from Sylens, who finally agreed to join Aloy's cause and meet at the base after witnessing her victory.

Regalla didn't die yet from the initial fight, but she finally accepted her defeat as she knelt in the dirt. There came Kotallo to guard the enemy closely, his hand resting on his weapon to ensure she made no desperate final moves.

Hekarro came to Aloy and said it was Aloy who flew on the wings of the Ten and challenged Regalla in a way no one else could. He insisted that she must decide Regalla's fate by their rights as Tenakth, mentioning he spared her once before, which only made things worse for everyone.

Hekarro was also sorry to say that Regalla was once the best of his marshals before her betrayal. Aloy said she was dangerous, but maybe that was exactly what they needed for the coming war.

However, I got the option to choose her path, and I chose that her life ends here. I decided that the threat she posed was too great to let her walk away a second time.

It looked like Kotallo was just waiting for this moment to settle old scores. He didn't think for a second while putting his spear through Regalla's stomach and ended her life right there in the arena.

After taking down Regalla and ending the threat to the tribe, Kotallo mentioned blood for blood as a final tribute to those they lost. Aloy looked at the fallen marshal and said that it was over then, signaling the end of the civil war that had torn the lands apart.

After that, one of Hekarro's soldiers came over to say there was something important they needed to see in the throne room. So, they went there together.

It was a man who had surrendered to their guards outside the Grove, claiming he had an urgent message for the Outlander who defeated Regalla. He gave Aloy a Focus, mentioning it was from an interested party who had been watching the battle from afar.

As Aloy needed the room for herself to check the message, Hekarro ordered everyone to leave the area. He then left the throne room as well upon Aloy's request, showing his respect for her privacy and her role in saving his people.

Aloy used the Focus and noticed it was like a live call from Sylens, who at last decided to do whatever Aloy asked. After seeing her defeat Regalla, he finally realized that she was the only one capable of leading the fight against the Zenith threat.