Big team battle against a team that was totally garbage, they actually were shooting each other a bit for some reason, probably squabbling over weapons. It was on Hemorrhage. Our team was really dumb too, I went for the Wrath, but after 60 seconds no one picked up the sniper so I switched. Got 16 kills with it, never died. I got the final kill #75 to get my perfection, for some reason I got a kill without using the sniper. I may have DMRed a guy. Still feels pretty sweet to finally get one. I only had one in Halo 3, and I ended up hiding in the base after getting 15 just so I didn't get killed. 
 
http://www.bungie.net/stats/reach/gamestats.aspx?gameid=293834826&player=TTUStudent

Nice work, even if it sounds like you had a few jackasses in the game. I remember watching my brother getting 15 kills with no deaths only to die right before the end of the match, he was so bummed out.

Don't have one yet and (just checked) only have one in Halo 3.  Wow.
 
I believe if there is a host change in the middle of a match it spoils your perfection, similar to how it resets your current kill streak.  So, you need to be fortunate enough to not have host quit on you during your perfect run as well.  I don't think I've had a perfection spoiled in reach this way, but I have had a handful of running riot (or better) streaks dumbed down to a killing frenzy + killing streak.  Grrrr

Snipers is the easiest playlist to earn a Perfection. Everyone is camping, so it's easy to sit back and pick off 15 dudes hiding in the trees. That, and a lot of players are not able to hit faces on their first shot.

Congrats.
 
I earned mine actually by running around and at my 11th kill I was like 'oh damn I haven't died yet!' so I took a backseat and didn't charge so much for the last kills and the rest of the match ^_^.

Just earned my first!  Slayer Pro on Rumble Pit.  Picked up a shotty after my first kill (a melee) and ran off 24 straight kills with it!  Ran for more ammo in the middle of the spree, of course.  I've had a fascination with going for shotgun sprees lately.

I only got one in Halo 3 during a very tough and tense big team battle but I almost got one in Reach during a regular slayer game. I seem to get closer to it in Reach when I try. 

I have possible the biggest nerd boner right now.
 
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