Long knife
From Twilight Heroes Wiki
long knife
Plural: long knives
Not just for politics and corporate life anymore, long knives have starting to seep into every aspect of modern life. They're the preferred weapon of character assassins everywhere, and they're a real nasty piece of work. As you might expect, they're best when used from behind.
Melee weapon (Piercing)
Power: 80
Level Required: 10
Autosell value: 150
+10% to hit
Successful hit weakens opponents (by 5 points).
How Obtained