"A theory on the origin of the universe"
Cosmology and Big Bang Theory deal with the origin of the universe, and are separate fields from biology. While "evolution" is sometimes used poetically in these fields, they do not refer to biological evolution. Creationists typically have to make this erroneous connection in order to claim silly things like evolution is trying to replace God.
"A theory on the origin of life"
No. The study of the origins of life is called abiogenesis. Abiogenesis is a young, exciting, and most importantly a distinct field, and evolutionary theory is valid no matter what abiogenesis researchers discover. Perhaps someday enough evidence will be gathered and the two theories will be merged, but for now they remain separate entities.
"A hierarchy, with humans at the top"
No modern organisms are more or less “evolved” than others. All are equally well adapted to their respective environmental niche. There is no direction to the process; species cannot "devolve".