Development topic: http://gtaforums.com/topic/881281-
Introduction:
Lethal Slices is a modification for Grand Theft Auto: Vice City utilizing the CLEO Library. It increases the chance that the katana can slice off heads and allows all other sharp weapons (knife, cleaver, and machete) to slice off heads. Hits that knock peds down to the ground cannot slice off heads. Type "SLICES" to toggle this effect on or off. Bonus feature: type "HEADLESS" to pop off Tommy’s head.
Installation:
* Download the mod (click the Download Mod button).
* Download CLEO for Vice City at http://cleo.li/.
* From the CLEO download, copy VC.CLEO.asi into Vice City's folder.
* If CLEO.asi already exists in the folder, you must delete that file.
* From this mod download, place the CLEO folder containing SESlices.cs into Vice City's folder.
This mod has been tested only on VC v1.00 US.
Video: