Lava falls slowly and when it burn object it speed up .

with limited resource you could use an aire craft or fire man you can stop the lava or people . stop the lava make the lava go in another direction and save civilian equal burned house that speed up the lava.

the fun is coming when you stop the lava and the lava go in building like gas station or wood stok that speed up the lava insanely so you must be carefull with your choice . when the lava it the water we count building destroyed and civilian rescued