Complete the indicated task to unlock the corresponding weapon.

Weapon	How to unlock
Chicago Typewriter	Complete all four episodes.
Infinite Bowgun	Complete all four episodes.
Infinite Rocket Launcher	Complete all four episodes with a combined time of less than S3 hours.
Meat Grinder	Complete all four episodes in Survival mode.
Moira's Katana	Complete all four episodes in Invisible mode.
Natalia's Bubble	Complete all four episodes in Countdown mode.
Short Sword	Complete all four episodes in Normal mode.