How to beat cave 5 - Use Units- Witch, Centaur, Black Knight, Succubus, Goblin, Mermaid, Use Spells - Healing, Phoenix Bird, Hercules, Athena, and Arrows. Just keep hitting forward. When your mass army is at the front of the castle and you hear the first ring, cast Athena on your melee units and Hercules on your ranged units. Use phoenix and arrows when you have less troops and want to clear out the way. Re-post if getting to the bottom.
 "Shopping Cart Hero 2"){kind=icon}
 "The Endless Zombie Rampage"){kind=icon}
 "Sniper Assassin 3"){kind=icon}
 "Multitask"){kind=icon}
 "Toss the Turtle"){kind=icon}
 "Epic War 3"){kind=icon}
 "Sacred Seasons MMORPG"){kind=icon}
 "Frantic 2"){kind=icon}
 "Morningstar"){kind=icon}
 "Cube Colossus"){kind=icon}
 "Battalion: Skirmish"){kind=icon}
 "SHIFT 4"){kind=icon}
 "Learn to Fly"){kind=icon}
 "Factory Balls 2"){kind=icon}
 "Escape the Museum - Van Gogh Room"){kind=icon}
 "Cell Warfare"){kind=icon}
 "Two Rooms"){kind=icon}