As Far As The Eye

Traits are unlocked on the end game screen after completing a successful Quick Game scenario, wherein the condition to unlock the trait is met.

The trait Passionate is unlocked by reaching the Eye with every trade maxed by at least one pupil. This is the most difficult task to complete in the game, and requires a well-prepared run as well as good knowledge of the game mechanics. A detailed thread is available for the ideal run to accomplish this:
The Ideal Run for Passionate/Versatile

Versatile unlocks alongside this achievement after completing the run.