Complex sentence: The film, Gilliam's first as a solo director, was not well-received by critics or audiences, although it has gained something of a cult following since its release, and strongly established Gilliam's distinctive visual style and dark sense of humour.
Split into simpler sentences: The film, Gilliam's first as a solo director, was not well-received by critics or audiences, although it has since become something of a cult film. Despite its lack of initial success, "Jabberwocky" strongly established Gilliam's distinctive visual style and dark sense of humour.