A Quest for Understanding is an achievement that requires the player to defeat Astellarn in the Dragonkin Laboratory with at least two pulsars active.
Astellarn periodically summons a pulsar star, which explodes for arena-wide cannonball damage. This damage is scaled to the number of people participating in the raid; a raid set for three people means the star deals around 2,200 cannonball damage, while a raid set for one means the star deals around 900 damage. Pulsar stars do not last indefinitely, and will despawn sometime after another pulsar appears. Players should reduce Astellarn's health to 5,000 before finishing her off when two pulsar stars are on the arena.