Locked Room: Bunker Heist

There is hidden, underground government bunker in a cold, secluded zone in Russia... Well, to be honest, this is not a secret for you, you received information from inside, a large amount of radioactive residue were released in the area by accident, and the base was evacuated immediately. However, there is a heavily guarded safe, with invaluable contents which worth the risk. Make a plan, infiltrate the base, find the safe and crack it open. You probably won't find anybody underground, however, due to high radiation levels you will have only an hour to finish the job. Good luck!