a minigun is a strong weapon, which is usually not avalible on the server.
You might have been desync to the RUS player
The tank is avalible at the army, only once a week, not easy to get.
The admin roof, is over the galigula casino, admins respawn there if they want, there are vehicles, locked for players, only avalible for mods and admins.
Police stars just mean you are cool if you got 6 stars