Guild Wars 2

So I counted up all the mastery points for all 3 Tyrian tracks (Pact Commander, Legendary Crafting and Fractal Attunement). The number is 49. But I started the expansion with 39 points, not certain why (100% map completion, perhaps?).

So how do we get the extra 10 needed to (eventually) complete all 3 tracks? Do these come from having a surplus of Hero Points?

Thanks in advance for the answer.

check your achievements and collections, some you might not have done or unlocked, which award old tyria mastery points

Have a look at your achievements – any with a red icon give tyria mastery points, and any with green give Maguuma mastery points. There’s more than enough, I think there’s 60-odd Tyrian ones available.

It only takes 49 to max them all?

I started the expansion with 55.