Bilbo seen a fire so he goes to see who is there he found giants and tried to pick . pocket them. The scene inform the theme by Bilbo telling the trolls he is alone. Bilbo is being loyal by not giving away his friends.
Bilbo created a distraction so some of the goblins would try and get him while the others escape. Because Bilbo was willing to risk his life to save Gandalf and the dwarfs.
Bilbo was making fun of the spiders to create a distraction then started to cut the dwarfs down Bilbo was throwing rocks at the spiders. The scene inform the theme by saving the dwarfs and distracting all the spiders.
Bilbo is trying to find a way to escape the prison he found a way which was to put the dwarfs in the empty wine barrels. The scene inform the theme by Bilbo could have escape with out them but Bilbo helped all the dwarfs escape from the elves.
Bilbo could have ran off with the gold but he stayed by there side to fight the orcs. Bilbo stayed to fight no matter what or how big the enemy.
Thorin gave Bilbo gold out Bilbo still fight with him until the end. The scene inform the theme by Bilbo took the gold and did not leave them he helped them instead of taking the gold and leaving them to fight it he stayed and was not like the king.