You did break the 'Golden rule' there Harry; "Never leave the car during an incident",
I'm not critisizing you as I have broken it myself a few times, but in thinking about it
and as the years advance I won't be breaking the 'Golden rule' anymore.
We just don't know what they have consumed, your client sounds like he had a
good dose of Ketamin or MMDA inside of him and all washed down with alcohol.
Also we don't know what concealed weapons they might be carrying or if indeed
they are trained martial arts fighters or boxers, we just don't know !