Katana

From Halopedia, the Halo wiki

The Katana (sometimes also incorrectly called the Hayabusa) is a special armor permutation unlockable by earning every achievement (1000 gamerscore in Halo 3 out of 1000) and all skulls (including silver skulls). The sword closely resembles Ryu Hayabusa's Dragon Sword, and is not usable by the player.

Characteristics

The Katana consists of a normal Hayabusa body armor with a Katana sword affixed to the back.

See also