How do you unlock olive / timmy helmets

Games Halo 5: Guardians
1

So I know that it’s forge related n all but I’m not 100% sure how people get these and I’m wondering how to.

…Although most likely wont get it as I’m a awful forger.

2

I believe one of them you get if your map makes it into matchmaking.

3

There are no such thing as Olive helmet and Timmy helmet in Halo 5.

4

> 2535468263937860;3:
> There are no such thing as Olive helmet and Timmy helmet in Halo 5.

5

> 2533274976890561;4:
> > 2535468263937860;3:
> > There are no such thing as Olive helmet and Timmy helmet in Halo 5.
>
> Olive - Armor - Halopedia, the Halo wiki

I never seen the Olive helmet in my life. When did the Olive helmet came out?

6

> 2535468263937860;5:
> > 2533274976890561;4:
> > > 2535468263937860;3:
> > > There are no such thing as Olive helmet and Timmy helmet in Halo 5.
> >
> > Olive - Armor - Halopedia, the Halo wiki
>
> I never seen the Olive helmet in my life. When did the Olive helmet came out?

The last update.

Link.