WH40K - Space Marines - Ironclad Dreadnought

Ironclad Dreadnoughts sacrifice versatility and firepower for an even greater amount of armoured protection and powerful, dedicated siege weaponry, and while they may not be as effective as the Siege Dreadnought in close-quarters, street-to-street urban combat, they more than make up for it by way of their powerful close-combat weaponry and extreme durability.