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Description
This skill enables you to fiercely charge at an enemy while protecting your vital points. You will receive less damage from long ranged bow and crossbow attacks, and will not be knocked down. This skill cannot block magic from long ranged attacks. Upon approaching a target, this skill forcefully hits and pushes back the target, causing it to temporarily lose consciousness.

Details
Humans and Elves must have a Shield equipped in order to use this skill. Giants, however, may use it even without any equipment.
A Cooking Table or a Cooking Pot will also work. Books, however, will not work.
Once activated, the user must click on the intended target. The character will then face the enemy, quickly charge at it, and knock it back with one strong blow.
The enemy will be temporarily stunned unable to prepare any skills. The player may use this opportunity to prepare another attack. However, Charge has a cool-down time, so it may not be used in succession.
The stun effect lasts long enough to allow weapon switching.
The skill has a minimum range, meaning it can't be used if you're too close to the target.
The user will take reduced damage from projectiles while charging. Ranged Attacks, including Magnum Shot, will not stop the user's charge.
However, if the user takes enough damage to be put into Deadly Status, the charge will be interrupted.
Magic attacks, normal attacks, and Counterattack will stop the charge.
Charge deals barehanded damage.
Charge has a cool-down of 10 seconds after use, however if the player loads the skill and decides to cancel it without using the skill, the 10 second cool-down does not apply and the user can reload the skill immediately.
Charge can be loaded while the following skills are in their animation phase:
Combat Mastery (regular attack)
Windmill
Smash
Counterattack
Icebolt
Firebolt
Lightning Bolt
Currently capped at rank 6.
Note: Rush moves at the same speed as Charge.
Note: This skill is called "Assault" in oversea servers. However, it is called "Charge" in the American server (direct translation)


Obtaining the Skill
Talk to Waboka in Cor about skills. He will give you a 2x1 quest scroll.
Complete the quest, which requires you to kill 30 Hobgoblins within 3 1/2 in-game days.
Talk to Waboka after you have completed the quest to receive the skill.
Exterminating the Hobgoblins
Method to Obtain Ask Waboka about 'Skills' and have not learned Charge

Briefing Please exterminate the Hobgoblins that devastated my village. - Waboka -

Objectives Kill 30 Hobgoblins
Speak to Waboka

Rewards 3600 Experience Point
Charge skill

Additional Advice If there is not enough people with long-ranged high damage skills (ex. Fireball, Thunder, Magnum Shot, Arrow Revolver) for killing hobgoblins on the banks, then use Rafting and stop at the hobgoblin village in Lappa, and you can kill hobgoblins faster there. Use the collapsed (one-way) Mana Tunnel or Goddess Wing to get out. While on the raft, it is recommended go with a party so that you can drive the raft and attack at the same time.

Yeah, it's the same for all three races.