Spiral Slash - The first attack skill. Damage increase is rather low at level one but helps for effective grinding in the early levels. Mana aion kinah cost is relatively low but this skill soon becomes useless when you reach higher level skills.
Warriors Shout - A must have buff for any two hands mercenary, not only does this skill increase your striking power by +16% (at level 5) it also increases your attack speed which is rather handy.
The buff lasts 60 seconds but costs little in the way of mana so there is no problem having Warriors Shout constantly on whilst your leveling.
Striking Up - A great stun skill that inflicts moderate damage. This skill is essential not only for unlocking later skills but because of the stun duration which lasts 2.5~3 seconds and in addition to this a fast cool down.
Although the stun duration is the same as Warriors Strike (see below) and the damage is less, this skill is essential for fast, effective leveling and boss stun-locks.
Provoke - A good skill for many situations. Provoke has saved me, the party and many quest NPCs from certain death. The effectiveness of this skill can not be overlooked. It decreases enemies’ defense power but increases their attack speed.