The following objects can also be used as weapons.

Totally destroy a car, then Smasher can pick up the engine and use it as a weapon.

Destroy the airplane at the Airbase to use its gun.

Destroy the two large black structures found in the Hovercraft level to get a flare gun.

Destroy the police car in the Car Park level to get a rocket launcher.

Go to your left as soon as you enter the reception level and destroy the farthest box to get a pistol and 2 grenades.

After entering the Bronx level, keep going straight and pass the train that throws bombs at your character. Then, turn left and break open the brown gate to get a pistol in each of the two left boxes in the gate.

Destroy the first car on the bridge level to get a pistol. Destroy the second car at the end to get a shotgun.

Destroy the parked black car inside the gate in the Car Park level to get a shotgun.