Wild West Indies - Assassin's Creed IV: Black Flag

Kill 4 Enemies in a row using the Multi-Pistols - 20

Once you have the first and second pistols you can equip up to 4 pistols when you craft and equip the Pistol Holsters.

You then need to craft;

Pistol Holster III - 2x Humpback Whale Skins

Pistol Holster IV - 2x Crocodile Skins

Humpback Whales can be found swimming in the middle of the map at random times. You need to harpoon two of the Humpbacks. Recommend that you upgrade all Harpoon Resources before attempting to attack the Humpback Whale.

Crocodiles can be found swimming in lakes and rivers in Nassau and Long Bay. You need to shoot it with a sleeping dart then skin the crocodile.

Once crafted, you need to find some guards - this is the easy part. Once you have at least 4 guards chasing you, tap Y to shoot the guards in quick session.

Referencing the use of guns - of course the The Wild West being famous for its numerous gunslingers, being a play on words with Wild West and the West Indies.

British Heavy Dragoon Flintlock Pistol