Are they pre order only and u cant unlock the helmets in game or are they just patterns for the helmets(skin).?
Just the skins/patterns/paint-jobs. You could have just searched up an answer without trying to make a thread about it you know. The answer is all over the place.
Its just the Skin’s for the helmets that are Pre Order only, you can earn, unlock, the Helmets themselves in the game through progression, achievements, etc.
Locus on mighty ape actually just says Helmet. It doesn’t even mention the skin. Although I do believe that 343 said they the pre-order items were skins only.
I am going to say it’s skins only.
The reason I say that is because a megathread about pre order bonuses was posted in the “hub” sticky and it states that the pre order bonuses are in no way exclusive armour, only skins.
Hope that helped! 
> Its just the Skin’s for the helmets that are Pre Order only, you can earn, unlock, the Helmets themselves in the game through progression, achievements, etc.
Good because I want the locus …
> > Its just the Skin’s for the helmets that are Pre Order only, you can earn, unlock, the Helmets themselves in the game through progression, achievements, etc.
>
> Good because I want the locus …
Same. Gotta get a better look at it in game but it looks like what I might go with.