|Crystal Defenders Enemy|
|Wave Number||Wave 18|
|HP||1,550 (Kthili Sands)|
1,395 (Melby Point)
|Abilities||Resists Physical Attacks|
The Toughskin is an enemy from Crystal Defenders. Being a tortoise, it is resistant to physical attacks, so the strategy to defeat this wave consists on upgrading one's physical attacks or deploying new magick-based units.