Bullet element can be used to combine Arrow, Bulletproof Vest, Corpse, and Gun in Little Alchemy 2. Making Bullet is not very complicated, at least you need to make Gunpowser and Human first. We have figured out 4 ways to make Bullet, step by step from easiest to hardest. Check out the detailed walkthrough and try it yourself.
Earth + Air = Dust
Fire + Dust = Gunpowder
Fire + Earth = Lava
Lava + Earth = Volcano
Earth + Ocean or Sea = Primordial Soup
Volcano + Primordial Soup = Life
Earth + Water = Mud
Air + Air = Pressure
Earth + Pressure = Stone
Air + Stone = Sand
Sand + Mud = Clay
Clay + Life = Human
Method 1: Gunpowder + Tool
Human + Stone = Tool
Gunpowder + Tool = Bullet
Method 2: Metal + Gunpowder
Human + Stone = Tool
Tool + Stone = Hammer
Hammer + Earth = Ore
Ore + Fire = Metal
Metal + Gunpowder = Bullet
Method 3: Container + Gunpowder
Fire + Human = Fireman
Fireman + Fireman = Idea
Idea + Human = Alchemist
Stone + Stone = Wall
Wall + Wall = House
Alchemist + House = Container
Container + Gunpowder = Bullet
Method 4: Metal + Mineral
Human + Stone = Tool
Tool + Stone = Hammer
Hammer + Earth = Ore
Ore + Fire = Metal
Time + Life = Death
Death + Life = Organic Matter
Organic Matter + Stone = Mineral
Metal + Mineral = Steel