The 23-year-old also claimed her female friend was attacked with a crowbar and a male friend was also assaulted.
The incident is alleged to have taken place on Mar 10, 2009, at a carpark and picnic spot at Townley Hall Woods, Townley Hall, Drogheda, Co Louth.
The court heard that the women, Natasha Cluskey and Christina Leslie, were with two men they knew and had met in a nightclub in Drogheda earlier, Mark Kavanagh and Gareth “Geno” Jein.
On trial at Dundalk Circuit Criminal Court are two men who have been charged with violent disorder.
Lukas Smalenas, aged 21, of The Drive, Highlands, Drogheda, and Marius Baciulias, aged 21, of St Michael’s Terrace, Clogherhead, Co Louth, deny the charge.
Mr Baciulias is also accused of causing damage to a car in the alleged incident.
The court heard the two woman and the two men they had met drove to the woods after the nightclub.
Ms Cluskey said they parked the car on the grass but it would not start again as it had got stuck. The four then decided to try and push it off the grass.
She said there had been another car at the woods and the men in it got out and asked if the group wanted to drink with them. They said no.
Ms Cluskey told the jury: “One of the fellas put his hand on Christina and said, ‘I will look after you.’” Ms Cluskey said things happened very quickly and a conflict broke out.
She said Mr Kavanagh and Mr Jein “got hit with stuff, it was like crowbars. So did Christina”.
Ms Cluskey said that after the conflict broke out, she and Ms Leslie jumped into the car and locked it, but “all of a sudden, the windows came through on top of us”.
She said the car door was then opened and “they dragged me out of the car. They stuck a black handgun to my head and said, ‘Do you want to live or die?’ and I said, ‘I want to live’”.
Ms Cluskey said Mr Kavanagh “was on the grass all busted up”. She said his “ear was split in two and hanging off. His head was busted open”.
“Christina was getting her face smashed with a crowbar and Mark’s whole head was smashed,” she told the court.
She said Mr Jein “had disappeared, we actually thought he was dead”.
The trial continues.