Hard mode is moving at the pace of what "easy mode" should be.
Also there's a slight glitch. At the red -> arrow, I teleported to the Caddy exit and beat hard mode.
Explosions kept knocking the invisible goblin all the way to my own castle, so I beat cave 5 with The End, Dragon Rider, Goblin, Witch, Centaur Archer, Mermaid; Comet, Hercule's, Athena, Lightning Bolt, Freeze Trap. First wait around until The End appears, then comet the enemy hero so he'll run over. Send all your forces. As your forces get close to the invisible goblin, cast Athena. What Athena does is to make all damage to your troops go to 0, but knockbacks and spell effects still take place. Stun and freeze the invisible goblin, and then you should win.
The explosion flight path should be looked at. I knocked the invisible goblin all the way from his castle into my castle, for an insta-loss. Bad cannons. Bad!
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