Vectorman 2 (Prototype - Aug 15, 1996) has some interesting stuff too. All levels implemented at this point, but most of Vectorman 1 button codes work. Including pressing "y" to cycle through weapons.

There is one which I don't remember seeing in the final. A flame weapon. Vectorman's pallet turns red, has flames around him. It turns Ron's Test Level foreground red as it uses Vectorman's pallet. Quite the sight.

This is only in the Vectorman 2 Aug 15, 1996 proto, along with most weapons. The later ones don't have most of them available with the "y" select. The Aug 15, 1996 proto also has the tank ammo normally only usable in tank form.