Katana

"I'm grabbin' this ninja sword. See any nunchucks, y'all let me know."

- Ellis "Shit. I'd pay cash money for this."

- Coach

The Katana (also erroneously called the Ninja Sword by some Survivors) is a close combat weapon in Left 4 Dead 2.

It spawns in the following campaigns:
 * Dead Center
 * The Passing
 * Dark Carnival
 * Hard Rain
 * No Mercy
 * Dead Air
 * The Sacrifice

The Katana is classified as a Slashing weapon. As such, hits from this weapon will sever limbs and splatter blood onto the screen.

Pros

 * Relatively fast swing speed.
 * Wide arc of swing, allowing for multiple Infected to be killed in one swing.

Cons

 * Very rare find. Sometimes it does not spawn at all in a campaign
 * Covers the screen with blood since it is a slashing weapon.