Leo Nix has 5 audiobooks on Listento.it, narrated by 1 narrator. The most-rated is Sundown Apocalypse.

In post-apocalyptic Australian desert, a small band of survivors wages a desperate battle against ruthless Revelationist terrorists. The city survivors set out to join Sundown's commandos on the edge of the Simpson Desert, but Sergeant Nulla and his motley group soon find out that the trek to sanctuary is not as safe as they'd hoped. Forced to defend their friends against a brutal assault and confronted with certain death, they react with ferocious brutality of their own. In the unforgiving Australian deserts and the fractured city of Adelaide, Sundown and his commando seek to survive any way they can. This is a stand-alone novel, and can be enjoyed even if you haven't listened to other books in the series.
©2018 Leo Nix (P)2020 Leo Nix

After winning the command of the Alice Springs military force, Sundown's commando is in a position to pose a real threat to the Revelationist terrorists. What was supposed to be a holiday patrol to the hot springs on the Diamantina plains turns into a nightmare for the commando, and only heroic sacrifices can save them. A startling development with the secret Pine Gap facility may prove to be a boon or a curse for their group, and for Sundown himself. Desert Strike is the fourth novel in Leo Nix's Sundown Apocalypse series: hard-fitting, fast-paced adventure in the harsh Australian Outback. This is a stand-alone novel, and can be enjoyed even if you haven't listened to other books in the series.
©2018 Leo Nix (P)2020 Leo Nix

While on holiday in beautiful Western Australia, U.S. Ranger and Staff Sergeant Ben "Obi-Wan" Kennedy leads his group of special ops through a series of dangerous adventures on their return to home base, Pine Gap Secret Intelligence Facility. The dedicated and self-sacrificing team joins a team of Western Australian Police who have arrested two Revelationist spies, but the terrorists want them back – dead or alive. Their escape takes them on a journey to assist a small country township infiltrated by terrorists – but in rescuing the community, they suffer heavy casualties. The fifth novel in Leo Nix's Sundown Apocalypse series, Special Ops is a story of betrayal, subterfuge, friendship, and love, set against a backdrop of survival in the rugged Australian desert. This is a standalone novel, and can be enjoyed even if you haven't listened to other books in the series.
©2018 Leo Nix (P)2020 Leo Nix

Sundown sends the silent kangaroo shooter, Roo, to explore the possibility of resettling their community in the safety of the Flinders Ranges. But when they arrive, they encounter a foe even more dangerous than the Revelationist terrorists. Meanwhile in Adelaide, the "house rats" have found the only way to survive: Forage by night and hide by day. Sergeant Nulla and his band of survivors accidentally set up camp right under the noses of the terrorists. But it is the conflict between the Alice Springs Command, Third Australian Army, and Sundown's Commando that sets the path towards either disaster or survival in the harsh Australian outback. This is a standalone novel, and can be enjoyed even if you haven't listened to other books in the series.
©2018 Leo Nix (P)2020 Leo Nix

The end of days is at hand. Terrorist organizations have taken out all superpowers, cleansing the planet of the "disease of civilization". In this radically changed world, small bands of survivors face an overwhelming enemy and fight back the only way they can: with sudden and savage violence. One of them - a man only known as Sundown - struggles with his inner demons while trying to keep his group alive. Together with an ex-IRA commander and a retired CIA agent, they lead a determined band of survivors to defeat their enemy. But can they survive the harsh, unforgiving Australian desert?
©2018 Leo Nix (P)2020 Leo Nix