2B1 Oka

The 2B1 Oka is a Soviet super-heavy self-propelled artillery vehicle armed with a massive 420mm cannon. Though primarily designed to fire atomic shells, it is more than capable of raining high explosives at an impressive range of up to 45km away. While obsolete in the Soviet Army, replaced by mobile ballistic missile systems, the Oka has found a new home in Oceanyka as an overengineered bunker buster and a hard counter to Kalayn walls.