I have to defend my town but they only gave me an arrow

Made for the 50th Ludum Dare Jam. Your town is full of dynamite and some unknown enemy is trying to use it on their advantage, help your people escape by delaying the enemy fire. Intructions: WASD -> MoveHold left click to aim, release to shoot.Run over the fire to put it down.You only have an arrow so aim well, Run over te arrow to pick it up again.