Primary: Tap the button and Chuck will stab a zombie with the pitchfork and fire, killing any zombies that are behind the blast. This results in 200 prestige points per zombie killed by this method.
Secondary: Hold down the button and Chuck will stab a zombie with the pitchfork, lift it up, and fire three times, each blast causing chunks of the zombie to fly off in gibs. Using the heavy attack will make the gun use three shots instead of one, and nets you 2500 prestige points per kill.
Thrown: Hold down the trigger to go into aim mode then press the button to throw it one handed, over hand, the same way you throw the pitchfork. This will use 1 shot of ammo.
Jed is armed with this weapon and can aim and use the shotgun as a firearm, unlike Chuck who can't use the shotgun function without stabbing a zombie first.
The name "Boomstick" is a reference to the Evil Dead series, specifically Army of Darkness, which has its own undead theme.
The Boomstick was featured in "Monster Hunter: Frontier" as an available weapon. Those who bought a japanese copy of "Dead Rising 2" were given either a redeemable Xbox360/PC code to receive it.
The image shown above shows that the shotgun has a stock, but in gameplay it does not.
The Boomstick has 30 shotgun rounds instead of the 20 the original shotgun has.
This weapon cannot be aimed like conventional guns, instead it is thrown. If a zombie is killed using this method, the gun will register as if a shot had been fired, and will still reward you 200 prestige points.
Oddly enough, if Chuck attacks a psychopath (or any other living person) with this weapon, he will only stab them with the pitchfork; the shotgun never fires. This merely causes a bit of damage, and the weapon will actually start to degrade or break, even if the player has several shots left. So obviously, this weapon is NOT recommended for fighting anything but zombies.
The Boomstick gives the most PP out of all combo weapons: its heavy attack gives 2500 PP, making it great for getting lots of PP in a short time.
In Co-op the boomstick uses one more gun shot than usual. (Primary attack uses 2 shots, secondary uses 4 shots.)
If the player has only one shot left, the player still can attack a zombie with the heavy attack of the weapon. The player will still shoot the zombie three times, even though the Boomstick technically has one bullet.
During the Snowflake Boss Battle , if you use the heavy attack on a zombie, and Snowflake knocks you over in the middle of the animation, the zombie will go through the animation suspended in the air even though it is not attached to the Boomstick. You will sometimes get the PP from this, and you will sometimes not.
To get the most amount of PP out of the Boomstick, you must use the normal attack twice, and use the heavy attack until it breaks, as the heavy attack uses 3 shots, whilst the normal one uses one, but even if you only have one shot left, you still somehow use the heavy attack and get three shots in. It is also possible to kill other nearby zombies with the heavy attack, resulting in 200 PP per extra kill.
In sandbox mode in Off the Record this weapon is extremely useful during challenges that require you to get a set amount of pp due to the large pp reward you get from the heavy attack. The most you will need to complete any pp challenge (aside from ones that require you to get pp in a specific way) is two boomsticks.