The Riddle of the Deep challenge is part of the Quest for the Lost Eternia Shards - Part 3: Aquanos DLC.

The goal of the challenge is for a randomly chosen hero to enter the portal in the middle of the map and solve a puzzle to stop the water from rising.


Similar to the Chicken challenge, a player is chosen at random at the start of the map to enter the center white portal and solve a puzzle. A chosen player is marked by an orange-colored puzzle piece icon hovering over their hero.

As the chosen player attempts to solve a puzzle, the other players which did not enter the white portal must defend against waves of enemies while the water level rises over time. Similar to the Spider's web attack, the water will slow the attack rate of hero defenses and slow hero movement. As expected, defenses immune to webbing, like auras and traps suffer no slowdown.

The puzzle is to follow the path shown briefly. On the first wave, it is three squares deep, and increases by one square per wave. Inside the puzzle cave is a gauge on how deep the water is. There is no ill effect if the gauge fills completely, besides the slowing of players and defenses.



A puzzle being solved by a chosen player.

Challenge Details

Recommended Level: 45 Challenge Information
Number of Crystals Number of Waves
Crystal Classic 12
Defense Units Starting Mana
160 N/A
Hazards Mana Per Round
None N/A
Spawn List
GoblinIconHard DarkElfArcherIconHard OrcIconHard KoboldIconHard WyvernIconHard FishWyvernIconNightmare DarkElfMageIconHard DarkElfWarriorIconHard SpiderIconHard DjinnIconNightmare SharkenIcon OgreIconHard
Easy Medium Hard Insane Nightmare
No reward Kraken Fang Kraken Fang Mythical Everflame of the Nautilus Mythical Everflame of the Nautilus
Easy Medium Hard Insane Nightmare
N/A Kraken Fang Kraken Fang Everflame of the Nautilus N/A
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