The crystal health determines how many hit points the Eternia Crystal can take before it is destroyed. The crystal health differs by the map's difficulty. If a map contains multiple crystals, all crystals have the same amount of hit points.
The Skin of Your Teeth award is based on the crystal health.
|Maps or Challenges||Crystal Health|
Bonus: Palantir, Bonus: Tavern Defense
Bonus: The King's Game
|Bonus: Glitterhelm Caverns||4000|
For Nightmare (Difficulty), the crystal health is multiplied by 5x.