Reach player level 33 to unlock 8 new features in Castle Defense.
The Death Knight Lord commands the dead — at 70% HP it raises every fallen enemy within range as an undead thrall with 30% of their original HP! Thralls don't drop gold and keep marching toward your castle. Exorcist units can cleanse thralls instantly, banishing them and earning +44G per cleanse. Without exorcists the Death Knight Lord can flood your path with an undead army!
Where: Fight ▸ Death Knight Lord
You think you have the Cosmic Serpent cornered at 50% HP? Think again — it tears a hole in space and TELEPORTS to a completely random point along the path, resetting its position! All the damage you did to move it up the path is wasted. Worse, it might teleport AHEAD of your strong towers. Anchor Tower units fire a reality-anchoring beam that locks the serpent in place and prevents teleportation — each pinned kill earns +55G cosmic gold. Position anchors near the boss spawn!
Where: Fight ▸ Cosmic Serpent
The Glacial Colossus is encased in primordial ice so thick that it is completely immune to ALL slow, freeze, and chill effects while above 40% HP — your ice towers and frost units are useless against it! At 40% HP the ice melts, finally making it vulnerable to slows. Fire Siege units assault with thermal rounds that melt the ice armor prematurely, triggering the melt at 40% HP faster. Each fire kill earns +53G thermal bonus. Counter it with fire before attempting any slows!
Where: Fight ▸ Glacial Colossus
The Sky Leviathan is a titanic airborne sea serpent that has abandoned the ocean entirely for the skies — it flies hundreds of meters above your castle path, completely beyond the reach of every ground-based tower! Catapults, archers, and cannons cannot reach it at all. ONLY Air Ballista units — specialized aerial artillery firing targeting bolts — have the range and trajectory to hit a flying target at that altitude. Every ballista hit is precious. Each ballista kill earns +60G aerial bonus. Build Air Ballistae immediately when a Sky Leviathan wave is incoming — without them you cannot damage the boss at all!
Where: Fight ▸ Sky Leviathan
At 60% HP the Void Colossus shifts to the void plane — physical attacks pass right through it! Only magic towers can hit it during the void phase. Phase Anchor units lock it in place for +50G anchor kill.
Where: Fight ▸ Void Colossus
The Titan Wyrm burrows and surfaces every 30 seconds at a random location! Earth Trap catches it mid-emerge for +48G trap kill.
Where: Fight ▸ Titan Wyrm
Enemy Toxic Shamans · Unit Rune Archer