Okay I have decided to work on this guide for Warriors since I have the most experience on them than any other class.
Warriors are the strongest in The World of Holic, they are able to tank, mob groups, Bosses, and even Chuck Norris. Yep that's how awesome they are. They have the highest Defense from any other class in game. Warriors are very easy to build. So easy a caveman can do it

First of all, it is recommended that you decide what are you going to focus your warrior as

AOE (The Human Mob-Blender)
Tanker (Meat Shield)
After deciding on which of them two types you want to be, it is also recommended to use a sub class with buffs that will support your build Holic Gold.

Monk - Tanker
Rogue - AOE
Priest - Any
-Monk is a good Tanker build sub because after lvl 24, they acquire a skill called Chain Bleed which allows the caster a 12% (I think xD) success rate cast bleed effect to the selected target. Which allows easier annihilation of your target. So with high Defence and fast kills, the Tanker becomes the supreme killer :D
-Rogue is a good sub class for an AOE build since it has a regen and defense increase skill that provides better support to your Warrior when taking those ferocious Gloomy Coyotes?
-Priest, well I'm just gonna trow the priest Holic Gold in there because they're awesome :D they revive people and have very helpful buffs. xD

The building process of an AOE Warrior
Some people think that building a Warrior is hard to do and requires a lot of planning for stat building. Well all I have to say is; that is not true . To build an AOE Warrior all you need to do is to equip your Warrior with full Glory gear, and use Physical Defense Stone Mixtures on all your Gear (to build up lost defense from not wielding shield).

Glory Shirt
Glory Gloves
Glory Pants
Glory Shoes
This will give your Warrior extremely high amounts of defense and attack power. Now since Glory gear does not has any Accuracy, I suggest to get an Earring from one of the Bosses that wonder around in Holic Gold. This will balance your accuracy a bit. To balance your accuracy even more, get jewelry with either critical and accuracy or strength and accuracy. Blessing and Glory jewelry also works. Finally, depending on your level and accuracy, use a Glory or Blessing+ Two Handed Weapon (2h)

+The difference from Glory and Blessing weapon is the accuracy, strength and some other stats.
The building process of a Tanker Warrior
Well the process of building a Tanker is not much different from an AOE, you will also need to acquire all Glory Gear. The only difference is that instead of using Physical Attack Stone Mixtures, it is RECOMMENDED to use Physical Attack Stone Mixtures (since shield already gives enough Holic Gold defense, just work on the offense baby ).

For the Weapons, you will need One Handed (1h) Glory Sword, and a Shield. and cookies!

Well since a tanker is supposed to take the hits, and not be the strongest, it is suggested to have a box of cookies so while the monster tries to cut through your steel body, you enjoy a nice snack heck you can even go afk while the mob is attacking you xD