Ok so just now on EU2 there was a weird dupe glitch
i randomly died in the beginning (killed by fuma, even though i was outside and he was nowhere near me)
then i spawned again and went up the same ladder where i died before, my character still standing there
then "both of us" died (killed normally) and i and my double respawned normally
i could kill myself, and when my double was kicked, i was bouncing back and forth (not the typical kick stun though)
when i killed the "other me" i respawned, and the "me" that i used to shoot myself with was then the next one i could shoot and so on