Heavy Reliance on the Mage's Hand

Bulong was lucky enough to travel to a fantasy world and became Bronn. Along with him is an adventurer's manual that allows you to infinitely improve your skills by constantly killing monsters. In this way, Bronn defeated the demon, killed the dragon, saved the princess, and became a brave man that everyone admired. That's how it should be. "Why, there are only two pages in my Adventurer's Handbook?" Let's look at the goblins in the distance. [Fantasy world, pseudo-dnd, adventurer]