A Squared I would fly the approach with my head looking out. Having seen a previous link to a video the undershoot are is dark and featurelss and I would be concentrating on trying to build a visual picture of where I was.
This crew really had nothing to help them. The terrain doesn't appear to have had any warning lights lights on it, the DME was showing a meaningless distance to the threshold, there were no approach lights only some very basic runway lights and the papis. The approach may have not been in the kit so it would be LOC and V/S without any electronic vertical guidance.
The area around and to the south of the runway appears to be well lit but they had the localizer for lateral guidance. Were they hanging on to the autopilot whilst they were trying to find the threshold in amongst all of the lights? The call on the CVR "Runway in Sight" may possibly confirm this.
The minimum altitude to use V/S is 160ft agl on approach.