Serial Killer's Knife

About
The Serial Killer's Knife is a rare knife only held by Diatii. The Knife was used by Diatii in his experements as well as his killings. Diatii loved this blade, and ekpt it safe like a child. The knife is able to fit in oddly small spaces and kill anyone in one hit if Mortal. The knife itself is made of a Carbon and Iron alloy. A unbreakable Knife. The Hilt on the other hand is made of wood. The lightweight knife somehow passes metal detectors. The only way to get the Knife is by Hack. It is only seen to be held by Diatii in the Boss fight. It has 1/4 <3 of damage in game and with each 100 hits it gains another 1/4 damage. It never breaks.