- "A sturdy sword with a wide blade."
- —Final Fantasy Description
The Barbarian Sword is the strongest weapon in the game, providing +134 Attack, 20 Accuracy, +18 Strength, and +15 Stamina. It can be used by the Warrior, Knight, Red Mage, and Red Wizard classes, and can only be obtained by defeating the most powerful version of Chronodia in the PSP bonus dungeon Labyrinth of Time.
In contrast to its presence in Final Fantasy as the most powerful sword, in this game it is a mid-to-low tier (level 24) greatsword, usable by warriors, paladins, and dark knights. It gives an Attack bonus of +15, and an Accuracy penalty of -5, making it on the whole a fairly standard greatsword in terms of damage at that level -- the level 24 Federation Sword actually eclipses it in damage potential, though the Federation Sword is more difficult to obtain (that blade can only be made through crafting).
The barbarian's sword can be found by fighting the Notorious Monster Moo Ouzi the Swiftblade in the yagudo stronghold of Castle Oztroja. Moo Ouzi is a powerful samurai, clocking in at level 30 himself. The Barbarian's Sword is actually the lower-quality weapon you can earn from fighting Moo Ouzi, the rarer, more powerful weapon being the Demonic Sword, a level 31 greatsword which deals more damage, enhances darkness, and deals Dark-elemental damage with each hit.
Neither of those weapons are exclusive, which means that they may be found in Auction Houses by any player.
The Barbarian's Sword is Warrior of Light's level 100 Exclusive Weapon, providing +68 Attack, Defense +15%, and a minor counterattack effect. It can be obtained from the shop by trading in 31,920 gil, Braveheart, Guiding Light x5, and Protect Orb x5.
The Barbarian's Sword returns as Warrior of Light's level 100 Exclusive Weapon. It provides +68 Attack, Defense +10%, and a slight counterattack effect. It can be obtained from the shop by trading in 182,800 gil, Braveheart, Guiding Light, and Hero's Hopes x5.