Bug helmet

please!!!! Does anyone know how I fix this problem to follow?! Since the second mission of the game I am always wearing the same helmet when I go to the tower. I am already level 24, I've changed my helmet like 1 towsand times and when I go to the tower
I am wearing every single time the same helmet. does anyone here had this same kind of error??? Someone can help me??? Thx!!!

:)

 

Halo 5 Guardians: Specific Armor Sets Not Unlocking.

Good afternoon:

I've recently ran into a bug with the game listed above where the following armor and helmets aren't unlocking in collection portion and customization portion of the game. They are as follows:

Heliosskrill Armor and Helmet, Mark VI [Gen I] Armor and Helmet, and Nightfall Armor and Helmet.

I have completed the prerequisties and unlocked the achievements in Halo: The Master Chief Collection for these sets of armor to unlock normally, but the game is showing that I haven't. I wanted to adress this issue to 343 Industries to have this bug cleared
from my game so that I can enjoy this game to it's fullest, but this is the closest I could find for actual technical support. Is there anything I could do on my end or have this looked after as soon as it can, I'd really appretiate it. Thank-you.

 

Tomb of Giants - Oh how I loathe thee!

If you have unlocked the shortcut leading to Lost Izalith, there are Chaos Bugs you can kill for a helmet drop called Sunlight Maggot. It's an awesome helmet that gives off a lot of light, allowing you to keep a weapon and shield equipped while fighting
all the giant skeletons.

Also, don't forget to use those Alluring Skulls to distract them, especially when sliding down ladders.