Reach player level 34 to unlock 7 new features in Castle Defense.
Shadow Wolves always hunt in packs of 3 — defeat one and the rest scatter, changing their path unpredictably! Use Beast Hunter units to predict their scatter routes. When a full pack is scattered at once you earn bonus gold. Study the pack's behavior to anticipate where the survivors will flee!
Where: Fight ▸ Shadow Wolves
The Chaos Hydra has THREE separate heads, each with its own HP pool — but they must all reach zero AT THE SAME TIME! If even one head is alive when the others fall, the dead heads fully regenerate in 10 seconds! You must burn down all 3 heads simultaneously. Tri Cannon units are the only ones that attack all 3 heads with a single shot, letting you drain them in sync. Each synchronized kill earns +55G chaos gold!
Where: Fight ▸ Chaos Hydra
The Venom Titan is a hulking venomous behemoth — at 55% HP it ruptures several of its venom sacs deliberately, spraying corrosive poison pools across multiple path tiles! Any unit walking through a pool takes escalating venom damage per tile and your towers positioned near the path take splash damage too. Antidote Siege units rain neutralizing compounds that dissolve the pools on contact, clearing the path safely. Each antidote kill earns +51G cleansing bonus. Keep Antidote Siege in reserve for the critical moment the Titan reaches 55% HP!
Where: Fight ▸ Venom Titan
The Tsunami Serpent is a colossal oceanic predator with the ability to summon and direct massive tidal waves — at 50% HP it rears up and calls a tsunami that washes horizontally across the battlefield, sweeping away any towers in the flood zone and resetting their positions! The tsunami moves faster than any unit can outrun. Tide Barrier units are built from reinforced sea stone that specifically resists hydraulic force — they anchor in place and block the tsunami wave, absorbing the full force while protecting all towers behind them. Each barrier block earns +46G bulwark bonus. Position barriers perpendicular to wave direction!
Where: Fight ▸ Tsunami Serpent
The Sand Wyrm burrows at 50% HP and resurfaces elsewhere! Venom Ward poisons it on emerge for +42G venom kill.
Where: Fight ▸ Sand Wyrm
At 70% HP the Glacial Wyrm flash-freezes every tower on the battlefield for 5 seconds! Fire Lance units melt the ice armor to prevent the freeze. +46G/kill.
Where: Fight ▸ Glacial Wyrm
Unit Iron Sentinel