I have tried this several times with Handmaiden yesterday and couldn’t get it to trigger. The first two times I think one of the arrows just killed an enemy since the arrow hitbox is larger than it should be.
But attempt 3 and 4 I paid special attention not to hit an enemy but still no success. So does anyone know if dashing through enemies (invisibility talent) or dodging through enemies (enabled by talent) does count as staggering?
And yes, the kill being accounted to the last person staggering/pushing it has been introduced with 2.0. Before you could shove enemies into a pit and they would just disappear. Now the kill is accounted for the one who shoved. It was an intentional change and a good one as it also let’s you track the whereabouts of specials who got touched once.