In the sidequest "Hunting boar" you help Halvarth in Bavelock to hunt a boar.
If you talk to him he will tell you he is supposed to be hunting boar for his family but is too mesmerized by Sonya to do it. He asks you to do it instead.
Enter the Overworld screen to find a boar and kill it. Talk to Halvarth again to receive the reward of 25 Pix.