I modeled these two characters and the chest while following along with the tutorials. The bat goblin is a second character where the same principles apply, so within the tutorial he does not get a specific set of videos showing each step of his creation. He is a character for proof of understanding, learning, and cementing in techniques.
I'm glad I got to see this tutorial. Very much worth premium, even after it is not free anymore for COVID19. I highly recommend it.
Here is a Link to the tutorial: https://learn.unity.com/course/unity-game-development-course-intermediate-art