Boom Cannon

Boom Cannon fires a medium-range rocket with a mining charge (it is very effective at mining blocks). The rocket detonates after 3 seconds or when it hits something.

This weapon's Alt ability causes an even bigger explosion, but it happens very close to you. This doesn't harm player or enemies directly, but it will set the enemies on fire.

Advantages
Unlike a Mining Laser, Boom Cannon can hit background blocks (because the timed detonation happens even if the rocket didn't hit anything in the foreground layer). Mining Laser fires a constant stream of projectiles, and they cause "explosions" only if they hit something.