Ah, I thought you needed 60k points to get Tatura, which might have been doable buying some packs. However, Reddit suggest you need 120k+ points because all of the previous items add to the total. Which means it doesn't sound doable.

These Path of Hero events might be good to collect additional rewards alongside your normal activities. 

But in my POV, they are not really worth it doing them for themselves. And buying packages of Hero points....hmm, that is up to you.

Just glancing at the tree it looks like if you go directly down the middle for Tatura you'll need 124,600 points. Keep in mind you'll need both of the keys.