Have trained up sky raiders for the 'rain of fire' and juggernauts for 'splash damage' but these skills aren't showing when attacking, so I can't access/use them. Heartbroken. Keen for solution.
Those skills are passive. The gunners fire automatically as they drop, and the Splash Damage just reduced damage taken. There's nothing you need to do. Same with the Bomber's Dead Man's Trigger and a few others
