This modpack is very simple. It adds some 'burst' animations to the attack of the hand cannoneer, it changes the shot sounds for machine guns and also change the icon of the hand canoneer.
This mod is pretty good for a first-mod. It replaces the hand canoneer icon, and gives it more of an explosion when firing. The shooting sound is also changed to a machine gun. The icon is a bit grainy, due to palette limitations, but otherwise okay. The explosion is a bit fake, but it's good if you aren't looking directly at it. The machine gun sound is superb.
If you are ever making a terrorist scenario, download this mod.