- Not to be confused with the achievement.
The Killer is a Fort Item released in the 17.0.0 update part of the Guard section.
- Aim at them accurately to maximize damage and conserve ammunition.
- Use a weapon with a slows down target attribute, so it can slow them down.
- Use something with invisibility, like the Stealth Bracelet, so that they won't attack you for a short amount of time.