Salamandra

Salamandra is the name of a pair of chainsaws made from the infernal dragon of the same name. The weapon is exclusive to Bayonetta, Jeanne's version of the weapon is called Agni. They can be used in both melee strikes and prolonged sawing actions for extra damage.

In game description
"Chainsaws that resourcefully use every inch of the infernal dragon Salamandra. Its sharp scales were forged into the weapons' teeth, and its heart supplies their engines.

At full throttle, their teeth easily rip apart even the hardest of iron skin and ravage deep through flesh below."

How To Obtain
In Bayonetta 2, the Golden LP for the weapon is broken into 3 pieces all found in Chapter X. The first appears off to the right after Verse 2 is a large gap only reachable using Panther Within. The second part is found just after Verse 6 is over, turn right from facing the tentacle and head up the small hill where an Umbran Resting Place is. Continue past it to the right (heading the right way if the ground starts to distort), appearing at the end of the path. The third part is found after getting to the third island and approaching the Muspelheim, turn right and extend the tentacle bridge at the end of the path. After triggering Verse 8 and winning, found in the Umbran Resting Place.

Trivia

 * Salamandra are lizards that had a supernatural affinity with elemental fire in the folklore of most of medieval Europe.