So its one hunter per player. If more people arrive then more hunters spawn.
I have started to extract at the extraction beside the Sports store so do this:
*Call Extraction and go down the rope at the back of the extraction.
*GO round to the sports store side and go up the rope on the building opposite the extraction
*This will draw your hunter to that side of the extraction and because you are in an elevated position you can get headshots when the hunter is in cover.
*Dead hunter
100% success rate at this spot by doing this. And also allows for more people to arrive as you can pulse or w/e.
I tend to kill, then go and sit at the extraction as there are lots of exit points in case another hunter arrives.