Ninja

This is the strongest Ninja leveling route on the iRO reference and the one most players should default to if they want performance. The build revolves around AoE spell pressure through Blaze Shield and Exploding Dragon, with Snow Flake Draft, First Wind, and Freezing Spear rounding out element coverage.

The most important defensive layer is Cicada Skin Shed, while Ninja Aura gives a useful stat boost for spell damage.

Throwing Ninja uses ranged weapon-style pressure without actually behaving like Archer or Gunslinger. The route scales from STR for damage, needs enough DEX for HIT and cast time support, and uses Throw Shuriken, Throw Kunai, and Throw Huuma Shuriken for its damage profile.

It is harder to level efficiently than magic Ninja because the ammunition management is real and the AoE option has a long cast and after-cast delay, but it can still be very effective if you enjoy ranged physical gameplay and can keep up with supplies.

This is the niche route. It plays like a stealth skirmisher by cycling Haze Slasher, Shadow Slash, and Shadow Leap on one target at a time while leaning on Ninja evasion tools to survive.

The iRO guide is very blunt here: melee Ninja is mostly a “for fun” build. It lacks strong AoE leveling and demands more care for less payoff, so it is best treated as a specialist route rather than the default recommendation.