When I leveled up to SR50 back in February, I never got the corresponding pack. I posted on the forums (after much difficulty getting my account to post instead of a generic error message) and Xbox support and did everything I was supposed to to try to trigger the unlock (uninstalling, resetting, changing network settings, etc.)
I still have not unlocked the Navy emblem, and I am now paranoid whenever I level up that I will once again miss out forever on a unique pack/unlock if I don’t blow an XP boost to try to prevent this bug (I believe it occurs when you BARELY make the XP to level up.)
This happened 5 months ago. I have not gotten any support for this from 343, nor do I expect to at this point. I just want you all to know that this is a bug that still exists, and to be careful, because there is no recourse to be had, and you will never be able to get the unique unlock if you mess up.
Here is a list of all the emblems you have to worry about missing out on if you don’t make sure you level up with enough XP (thanks WortWortWarthog for compiling this list):
- SR2-5: Elementary, Knot, Links, and Builder (All Common)
- SR10-40 (multiples of 5): Principle, Killer Bee, Stealth, Patch, Avian, Celestial, and ODST (All Uncommon)
- SR50-100 (multiples of 10): Navy (Uncommon), Army, ONI, Fireteam Osiris, Blue Team, and Ratio (All Rare)
SR115, SR130: Signal and Noise (Both Rare)
SR145-152: Kindred, Cognate, Slumber, Awake (All Ultra Rare), Sentient, Warden, Guardian, and Mantle (All Legendary)
Wish I had known ahead of time, maybe now you will.