> 2535454538782707;1:
> I have been in every Halo game… I am obtainable by everyone… Only a few will every see me… And many will never… There are others of me, but none like me…
I don’t think Perfections were in Halo: CE or Halo 2.
Lol, I would have guessed a game with no quitters. 
An Easter Egg?
> 2533274806711091;22:
> > 2535454538782707;1:
> > I have been in every Halo game… I am obtainable by everyone… Only a few will every see me… And many will never… There are others of me, but none like me…
>
>
> I don’t think Perfections were in Halo: CE or Halo 2.
You’re right; _“Perfection is a medal awarded in Halo 3 and Halo Reach for winning a Slayer game with at least 15 kills, and without dying.”_You can look it up at this link if you are interested.
Too bad OP, riddle us another one!