Crepelgate Fort - Nickel Ingot
This Nickel Ingot is found within a chest in the center of a pit of snakes. You’ll need to first grab the key from a nearby enemy and you’ll also want to take out the snakes before venturing down to loot the chest.
Northwest of Londinium Bureau - Nickel Ingot
In the area northwest of Londinium Bureau, you’ll find a small bandit camp. You’re going to need to take the key from the bandits, then swim beneath the nearby water to find a chest behind a wooden barricade.
Londinium Bureau - Nickel Ingot
Head to the top of the ruins to then jump down into the distinct pool of water encircled by tall wooden poles. Then dive down and destroy the wooden wall on the left side and swim into the next hidden Bureau room. In a small shallow cave you’ll find the chest with a Nickel Ingot inside.
Temple of Sulis Minerva - Nickel Ingot
This Nickel Ingot is located wtithin the Temple of Sulis Minerva. You’ll need to shoot the hanging storage piles to gain access to the chest on the ground floor. Watch out for the random Mountain Lion guarding the Nickel Ingot!