Generate an image  of a  kangaroo fighting  humans in a  desolate,  post-apocalyptic  Australian outback , with a  warm orange-b rown color palette  and a sense  of intense struggle , featuring the  kangaroo as  a powerful,  muscular creature with  sharp claws and  a determined expression , while the  humans are worn  out and desperate , with torn  clothing and battered  equipment, and  incorporate a sense  of movement and  energy through blurred  motion lines and  dynamic composition.