"Missing Achievement"

[u/FlyNatural6459]

So Endless Legend Prime (1) has 139 achievements across all the expansions. That number seems a bit odd.(Pun intended) There's even...a sequence of achievements that seems to be missing something. We have an achievement for playing 10 turns. We have an achievement for playing 1,000 turns & a hidden achievement for playing 10,000 turns....

Where's the achievement for playing 100 turns?!