Even if a quest has its difficulty performing it, it should be possible.
A class quest should be possible to accomplish only by having this class …
But the way it is, it is only possible if you use buffs, potions or specific items to increase the speed of movement.
Interaction with 2 types (stones / sand), 2 different modes to use, few monsters respawn in scattered form.
All of these motives together make it impossible to reach rank 3.
To finalize, rethink this quest, because as it is is simply annoying and frustrating.