Aran 1st job skills

Combo Ability (Max: Lv10) Passive - Received from Lv13 quest
After every 10 combo counts, your stats will increase. Increases up to 10 times. The buff disappears when you lose your combo count. Requires Double Swing Lv10.
Lv1: WA +1, WD + 5, MD + 5, stats increase 1 time
Lv10: WA + 1, WD + 5, MD + 5, stats increase 10 times
Notes - This is what makes the Arans unique. Your WA increases by 1 every 10 hits, for a maximum of +10 at Lv20. Awesome.

Double Swing (Max: Lv20)

Press the attack key twice to attack up to 12 monsters two times.
Input command: Attack + Attack
Lv1: MP -2, 102% Damage
Lv10: MP -3, 120% Damage
Lv20: MP -5, 140% Damage
Notes - Double Swing is your basic attack as an Aran. Which means two things: First, you will be burning lots of MP. Second, you'll be beating monsters senseless in no time at all. The damage multiplier listed represents the damage dealt by the second hit, with the first dealing 100%.

Combat Step (Max: Lv15)

Press the arrow keys twice to move quickly to another distance. Cannot be used while jumping. Requires Double Swing Lv5.
Input command: <<>>
Lv1: MP -1, Boost yourself 650 Distance
Lv15: MP -5, Boost yourself 1000 Distance
Note:Combat Step on ground is just pathetic. It's meant to use off a ledge.

Polearm Booster (Max: Lv20) - Received from Lv22 quest

By using HP and MP, the attack speed of the polearm temporarily increases. Can only be used when having a polearm equipped. Requires Lv5 Combat Step.
Lv1: HP -29, MP -29, increase attack speed by 1 for 10 seconds
Lv10: HP -20, MP -20, increase attack speed by 1 for 100 seconds
Lv20: HP -10, MP -10, increase attack speed by 3 for 200 seconds
Notes: This is the deciding factor when it comes to your training speed. This is what sets you apart from spearmen and DKs. When maxed, this increases your attack speed by 3. That's Slow(8) -> Fast(5). Take note that attack speed can't go beyond FASTER.