Awesome!
Some ideas:
The first player to enter certain zones. This would be bigger for Kunark/Velious.
Classic Examples:
The first wizard(s) to cast Alter Plane: Sky and Alter Plane: Hate
The first person to step foot in Plane of Fear.
https://wiki.project1999.com/Alter_Plane:_Hate
https://wiki.project1999.com/Alter_Plane:_Sky
https://wiki.project1999.com/Plane_of_Fear
The first player to land a killing blow on a god.
The first player to reach certain platinum thresh-holds.
100
1000
10000
100000
1000000? Hax?