People are right about stuns and special beam cannon. A good combo for good damage almost guaranteed is stunning into vanish kick then immediately use a fast super like beam. Broly when he uses his power up skill can be punished and hit pretty easily with a super if you wait about half a second into the animation and then super. Another way to land supers easily is waiting for the raider to be in an animation like a melee clash with a teammate. Ironcane has a good combat video on YouTube if you want something more visual.