Verbal Assault is a 1-vs-3 mic minigame in Mario Party 6. Each member of the team controls a small walker with a rapid-fire cannon and two large shields on their front. They run down the road in pursuit of the lone player, who is given control of a massive battleship.
By speaking certain phrases into the microphone, the single player can perform different attacks to try and hit the team. The other three players must avoid the battleship's attack while returning fire with their walkers' cannons. The single player has to hit each walker three times. The walkers' health is represented by three hearts on the bottom of the screen, as well as by the condition of their machine: the first two hits knock off one of the walker's shields and the third hit destroys it. After taking damage, a walker becomes briefly invincible, allowing the player to reposition themselves and prepare for the next attack.
On the other hand, the team of three has to hit the battleship with hundreds of shots, but without worrying about it becoming invincible. The battleship moves from side to side, but its size means that most shots will hit it regardless. Its health can be estimated by looking at the green crystals near the cockpit; as it takes damage, the crystals will fade to red and pop off of the ship.
The game ends when one side defeats the other. When this happens, the players will be seen outside of their machines-with the loser's vehicle(s) broken and emitting smoke-and perform their victory/defeat animation depending on whether they won or lost.
 Lone Player
These will appear in the Star Bank as hints: