The Hollow

The end of the 1960s. The GULAG system was abolished during Khrushchev's time, but not for everyone. The most dangerous were sent to ‘Zaslon’ - a secret place in Siberia where the Soviet Union kept its best scientists and dangerous prisoners who were disloyal to the regime, and they rebelled under the leadership of former aviation engineer Mnogogrishny, gaining illusory independence for themselves. You are Morok, the son of one of the scientists who developed a secret weapon here based on a special mineral, tungsten, which is only found here. Your task is to figure out what kind of weapon it is and who has it!