Você está procurando o filme cristão As Wylds (AKA As Aventuras de Chris Fable) de 2010.
Chris, a runaway child, lives with a group of misfits in a junkyard, stealing to survive. When a traveling preacher tells him that his father is alive and wants him to come home, Chris must leave his family of thieves and venture into the wilderness in search of his father and a better life. Join Chris on an action-packed adventure as he outwits bandits, escapes swamp monsters, battles evil robots, and learns valuable lessons about choosing the right path in life. A contemporary allegory inspired by John Bunyan's "The Pilgrim's Progress."
Aqui está o trailer onde você pode ver algumas das cenas que você mencionou, os efeitos amadores e um pouco ... design de título familiar no final (alguém pega os advogados de Rowling no telefone):