Multi-Rocket is an alternate ability of the Foot Soldier's ZPG. It was added in the Garden Variety DLC. When used, it launches four small rockets to the target. It takes 1.25 seconds to deploy, has a 24 second cooldown time, a projectile speed of 60, and fires a rocket every 0.8 seconds. Each rocket deals 50 damage for a direct hit, and 15 splash damage with a blast radius of 7, and an inner blast radius of 0.5.
What's better than launching a ZPG? Launching MANY ZPGs! While smaller than standard issue ZPG, these Zomboss rockets still pack a mighty punch!
Comparison with Vanilla Counterpart
Much more splash damage than ZPG, making it better to fire wildly on an objective point
Due to the fact that you're firing more than 1 rocket, you are slowed down much more than when firing the ZPG
Multi-Rocket is better suited for situations for when multiple plants are in one spot, such as in Gardens & Graveyards due to its massively increased splash damage. Additionally, it can also help in spots where plants are camping, such as the tree fort in the Team Vanquish. Have a group of teammates weaken some plants, then use the Multi-Rocket to finish them off. Other than that, it's good to use this at a safe distance, as the noise it makes is very loud, noticeable, and damage can be done to yourself if close enough to the impact. Also note that getting a kill on a plant with full health is unlikely, as landing all hits will only do 140 damage, which will only work on classes like Sunflower and Rose (not counting armored variants). In addition, the splash damage can do very little damage based on how far away a plant is from the impact.