what weapons haven't been used in piggy

I can’t verify this cleanly from the available information, so I’ll give the most likely answer: in Piggy , the weapons commonly seen are the bat, hammer, axe, wrench, gun, and traps, while unused or not clearly implemented weapons are things like swords, bows, grenades, and other heavy firearms.

Quick Scoop

If you mean the Roblox game Piggy , the safest way to think about it is that the game mostly sticks to simple, non-realistic melee tools and a few special items, not a full weapon roster.

Likely Unused Weapons

• Sword.
• Bow and arrow.
• Grenade or explosive launcher.
• Shotgun or rifle-style weapons.
• Flamethrower or other heavy sci-fi weapons.

Important Note

Because “Piggy” can refer to different games or fan projects, the exact list depends on which version you mean, and public pages don’t give one definitive “unused weapons” list.

Bottom Line

So the short answer is: Piggy does not appear to use most traditional weapon types; it mainly uses blunt/melee tools and a few special items instead.

If you want, I can narrow this down to Piggy chapter weapons only or Piggy Build Mode items only.