I figure they confronted him from a distance.He shot them both from his elevated position before they got close to him.They were wounded,but he didn't finish them off,so he climbed down at that point,in which they were probably seeking cover to radio for help.He then tried to escape.At some point he must have stopped,being lost.He saw others coming close and fired on them.Not knowing if they were part of the hunting party or not.I think he was just shooting anyone he saw at this point.This would explain why the first two hunter were only wounded.He didn't stick around to finish them and had no idea others were coming to their aid,IF,as reported he doesn't speak english.
Luckily,for the last two hunters he encountered,he was out of ammo or they'd be dead too.He had no idea if they were looking for him or not.
Pure speculation on my part,but the only way I can see someone taking out 5 armed people,wounding 3,and not getting shot in the process.
Good point, likely that some of the victims simply were not expecting to get shot.
Everybody's armed in the woods, gunfire is not unusual, etc, and nobody really expects some nut to go off like that.
Was this public or private land?