I was playing big team battle today and i got 18 kills no deaths and was awarded the running riot got no betrayles etc but no perfection 
anyone know why not or experience this?
I was playing with a guest but its not as if we were cheating or anything.
were u playing slayer?
Depends on the gametype really. I don’t think you can get one in one flag.
you only get the perfection medal if you’re playing slayer…
> I was playing big team battle today and i got 18 kills no deaths and was awarded the running riot got no betrayles etc but no perfection anyone know why not or experience this?
> I was playing with a guest but its not as if we were cheating or anything.
If this game is the one that you 're talking about then you shouldn’t get the medal.
From Bungie.net:
Perfection: Win a slayer game without dying with at least 15 kills.
yeah slayer only for perfections, iv gone 74 - 0 in BTB CTF on Utopie, sucks not to get a perfection but hey what can you do you still get your spree medal
oh… i was playing assault silly me. wow this community is growing 4 replies already lol
Sorry could you please tell me how can i post a link? 
it doesn’t appear with copy-paste!
EDIT: Found it
snikefriend
someone could have been booted/quit/lost connection/the game could have lagged and that will reset the kills counter. it will show you got 18 kills no deaths and got that running riot, but the game would have finished with your kill counter being less than needed.