Kraken with 3000 leadership?

[Namel]

Originally Posted by Zhuangzi

Namel, I did it very easily on Impossible with Royal Thorns, Orc Shamans and Bowman for ranged attack, and Sea Dogs and Pirates to kill Devilfish. Only spell I cast was Fire Arrow every turn for 5 mana a go.

I lost 15 Sea Dogs and 15 Pirates like this.

I guess royal thorns might make huge difference. I just didn't have royal thorns anywhere and no sacrifice. Did you really have only 3000 leadership when you did it with so small losses on impossible?