Pure Strength and Pure Dexterity
buy Megaten Gold to get high field, which is necessary.
Pure Strength
It is possibly the most difficult build to level. You have dexterity of about 100, but you have absolutely no intelligence. All your points go in strength, so you naturally use strength weapons. Skill points go into POW, vigor of bear, and 2nd job promotion skills, but apart from those skills you do not have the intelligence for anything else. This build is better suited for assassins, though with warriors, it turns a player into an almost undefeatable TM who is a must for grinding.
2nd Job Promotion: Muse can lower the defense of your opponent or to raise your own for an extended period of time. So you can kill the monster easily and save money.
Pure Dexterity
Probably one of the more efficient single stat builds. This build is nearly impossible to kill, because of the high level of dexterity which provides both defense and resistance to skill attacks. A few points should be distributed in intelligence about 80 to 100 for the benefit of POW and skills to let you grind better. Strength can be left alone, but health accessories and maxing out Bear's Vigor is a must for survival.
The dexterity makes this build a great PVP with harsh critical hits and moderate physical hits thanks to the dexterity and the POW respectively. This build has a moderate leveling rate in early stages, but starts getting progressively slower level 50. SAR weapons should be used for PVE and AR weapons for PVP.
2nd Job Promotion: Most definitely Muse. Champion buffs are not needed when POW is available. The Muse negative status will help in both grinding and PVP.
I hope you can find helpful things from my writing.