Highland Caves

 is the fourth Act of Hero Siege. The main boss of this act is Damien.

Areas

 * Old Mining Village
 * The Highland Mines
 * Mining Site A
 * The Nightmare
 * The Devil's Breach

Bosses:

 * Damien

Enemies:

 * Goblins
 * Melee Skeletons
 * Range Skeletons
 * Bombers
 * Wendigos
 * Jormungars
 * Voodoo Dolls
 * Maggots
 * Parasects
 * Dragon Whelps
 * Bees
 * Fungus Monsters
 * Spiders
 * Skeleton Mages
 * Unknowns
 * Skeleton Warriors