TNL

From NexusWiki

Abbreviation for "To Next Level," as players refer to it.

This indicates the amount of experience needed to advance to the next insight.

Mages have the highest TNL of any path, and Poets have the lowest. This is considered to be due to the fact that Mages are quite capable of soloing, even to the 99th insight and higher, whereas Poets must rely on grouping with other players for much of their experience gains.