Thunder Breaker 1st
| Skill | Max Level | Master Level | Description |
|---|---|---|---|
| Quick Motion | 10 | — | Increases accuracy and avoidability. |
| Straight | 20 | — | Uses MP to speed up the punch to rapidly attack enemies. |
| Somersault Kick | 20 | — | A devastating kick that accompanies a backward somersault. Attacks all enemies in the vicinity. |
| Dash | 10 | — | Press left or right arrow twice to temporarily boost your speed and jump. |
| Lightning | 20 | — | Summon guardian fairy and attack monsters in the close distance. |
Thunder Breaker 2nd
| Skill | Max Level | Master Level | Description |
|---|---|---|---|
| Improve MaxHP | 10 | — | This skill boosts up the amount of increase on MaxHP after each Level UP, or AP used on MaxHP. |
| Knuckle Mastery | 20 | — | Boosts the accuracy and the mastery of Knuckles. This skill only applies when you equip a Knuckle. |
| Energy Charge | 20 | — | A set amount of energy is charged after every attack. |
| Knuckle Booster | 20 | — | Uses parts of HP and MP to temporarily boost the speed of a Knuckle. This skill can only be triggered when a Knuckle is equipped. |
| Corkscrew Blow | 20 | — | This skill allows you to run forward and punch multiple monsters in front at once. |
| Energy Blast | 20 | — | Blasts a ball of energy to attack multiple monsters at once. This skill can only be used when the energy is full charged. |
| Lightning Charge | 20 | — | Knuckle will be empowered with lightning element for certain period of time. |
Thunder Breaker 3rd
| Skill | Max Level | Master Level | Description |
|---|---|---|---|
| Critical Punch | 20 | — | Critical attack available at certain rate. |
| Energy Drain | 20 | — | Uses energy to convert the lost HP of a monster into your own HP. This skill can only be used when the energy is full charged. |
| Transformation | 10 | — | Transforms you into a more powerful state for 120 seconds. |
| Shockwave | 20 | — | Strikes the ground with tremendous force, affecting multiple monsters. This skill can only be used during Transformation. |
| Barrage | 20 | — | Attacks a monster nearby 6 times in quick succession. |
| Speed Infusion | 20 | — | Uses HP and MP to temporarily increase the attacking speed of a weapon. |
| Spark | 20 | — | Make additional attack by the power of lightning fairy. Monsters around the monster that is attacked will get damage at the same time. |
| Shark Wave | 30 | — | Attack multiple monsters in front. |