Skill progression
After talking with Tessa for a while, Lucas came to know many devastating things.
Tessa told her story from the start with detail as she had free time. When she came to this place, she was alone just like Lucas but then she came across a group after walking endlessly.
Even she told Lucas that the forest seemed to have no end. She told him that she found many good people. A mix of girls, boys, men, and women. They all seemed to survive together while hunting small creatures for food until something not very good happened.
The ones who go for the hunt all had certain attack skills and that included Tessa. To be exact, her skill was the best in her group. She did not have to go close to the monsters and could just kill them with a single hit.
Lucas guessed it on his own, he knew that Tessa was into archery when she was young. She made some tweaking and her aim was as good as anew.