Osamodas/Strength

A Stregth Osa? You must be crazy...

Characteristic Points

Put everything into vitality. By level 100, you'll have over 500 vitality. Of course, you could scroll vitality to get an additional 100 vitality on top of that. Expensive, probably not worth it. The characteristic to scroll for this build is obviously strength. Scrolling wisdom is advisable as well.

Spells

This ain't an int build! Don't touch Ghostly or PoC! The focus is on your weapon, probably a hammer. Hammer skill to 5 is essential. Early on, level Prespic and Whip to 5 each. Feline Movement and High Energy Shot to 5 or 4. Then save for your last 3 summons. High strength makes your whip simply godly. 500-600 damage for just 1 AP!

Gear Early on, Adventurer set. Mid (and for leveling), Prespic set. Mid (for fighting), Green Scaraleaf or Earth Kwak sets. High level, Farle's, Terrala, or Magus Bwork sets. With 100 strength scrolled, it should be possible to have strength in the 300 area.

Weapons

Hammers of course! Choose what fits your gear best. Something with massive damage that can be boosted lots by hammer skill. WIth 300 strength (points and gear), level 5 skill, and the Osa hammer bonus, you should be hitting 200-300 with many hammers. Some twice a turn.