Big Rat Escape

Rats are not the most pleasant animals, but the fact that they are not at all stupid is not to be denied. Catching a rat is not easy, but in the game Big Rat Escape someone managed to do it and now the rodent is sitting in a cage. Just this rat did nothing wrong to anyone. She lived in the forest, got her own food, not tearing out rural sheds, but being content with what she found in the fields and in the forest. The rat was quite large for its kind and the wrong thing caught someone's attention and the poor fellow was caught. Your task is to open the cage and for this you will need not an ordinary key, but a set of numbers and also four round medallions in Big Rat Escape.