Hmm you could make an extension instead of everyone dieing you could say something like.
While wandering through the forest you see some smoke rising from the distance.
1.Investigate
2.Go back.
1. you find the corpses of several Anbu and *insert name of person who died here* you either
1.A search the bodies
1.B leave.
1.Aa you find several explosive tags.
1.Ab the corpses rise up and lead by *person who died in the explosion* attack you for disgracing their bodies.
It could be then like a pvp and count as one but you cant use items and you lose some chakra and no running away.The level could be 1 more then yours and as for stats well i have no idea.
1.Ba As you leave you turn back and see several corpses rising from the ground you then run as fast as you can and trip on a twig and lose some HP and charm.
1.Bb you leave without any problems.
2.you go away from the smoke.
So what do you think of the extension?