Great idea and execution! I particularly love the fire spreading mechanics and animations, and the items on the background taking fire is really a nice touch.
It gets difficult pretty fast, but its quite manageble for the most of it: I would have removed the timer if you wanted to focus more on the combat with the policeman, but I can see it adds an element of urgency to the game that otherwise would be there. Another suggestion I have is that I you could make the enemies take damage from the fire: this way one could decide where to let the fire spread in order to kill them while balancing the need to put it out after.
But I’m rambling, overall it was really fun! Keep it up!