With its larger cannon, it could fire more volleys and was tougher to destroy, but it also had to deploy and un-deploy, thus making it more difficult to use effectively in a heated situation.
An alternate version of the heavy artillery featured a heavily-armored, slow-moving repulsor frame with two large mounted cannons.
Two types of artillery, including another heavy model.
With its larger cannon, it could fire more volleys and was tougher to destroy, but it also had to deploy and un-deploy, thus making it more difficult to use effectively in a heated situation.
An alternate version of the heavy artillery featured a heavily-armored, slow-moving repulsor frame with two large mounted cannons.