Thief

This is the default Thief leveling route. Weaken enemies with Envenom, avoid hits with Improve Dodge and Hiding, then finish weakened monsters with fast dagger auto-attacks empowered by Double Attack.

Since Thief has no natural AoE leveling skill, the guide recommends sticking to passive monsters early, or using a slotted accessory with Marine Sphere Card if you want access to Magnum Break mobbing.

This is a niche build that uses bows for a little range advantage while still relying on AGI and DEX to keep auto-attacks consistent. You lose normal dagger synergy from Double Attack, so leveling is slower unless you deliberately build around outside sources of the skill effect.

Two major advantages of this route are having more DEX for higher Steal success and the ability to use different elemental arrows, including fire, wind, and holy options, to exploit monster elemental weaknesses more effectively.

The guide also highlights an alternative interaction: while Double Attack does not naturally apply to bows, gear that grants Double Attack will inherit the level your Thief has actually learned. That means a Thief with learned level 10 Double Attack can still trigger level 10 rates and bonuses on a bow through items like Sidewinder Card, Chick Hat, Snake Head [1], or Double Attack Stone(Garment). This path is best treated as a fun specialist route rather than the default leveling recommendation.