Yes. Download the Hindi audio track from a legal streaming service (using screen recording? Debatable legality) and use MKVToolNix to mux the tracks together. This is time-consuming but results in a perfect personal copy.
The bottom line: If you cannot find a legal dual audio stream, buy the English version and use subtitles. Or rent the Hindi dub separately. Piracy hurts the legacy of films like this.
To appreciate why dual audio matters, you must understand the film’s unique soundscape. Hacksaw Ridge won the Academy Award for Best Sound Mixing (and another for Best Film Editing). The audio is not just background; it is a character.
A low-quality mono or "cam-rip" audio destroys this experience. A proper dual audio 1080p or 720p release preserves the dynamic range—from a whisper in a jail cell to the deafening blast of a mortar shell.
It is important to note that most dual audio versions of Hacksaw Ridge available on torrent sites or unauthorized streaming platforms are pirated copies. The official dual audio releases are typically sold on DVDs/Blu-rays for specific regions (e.g., India’s Reliance Home Video released an official English-Hindi dual audio DVD). Streaming on legitimate platforms like Netflix, Amazon Prime, or Hotstar may offer multiple audio tracks as a feature, not as a separate “dual audio” file.
Downloading copyrighted content without permission is illegal in many countries and violates the filmmakers’ rights.