This required many restarts and resets.
Phase One: Many times Bombing Goblin died if he survives move forward.
Phase Two: Use everything except sea squire to kill mobs.
Phase Three: Sea Squire Ability after he done his bouncing wave, then bombing goblin both on Sage group.
Sage of Storm between Rose and the knight. Many times you will probably die because your monsters do not kill rose before she uses her own ability. Lot of patience required