[LumenPlacidum]

Do everything you can to equip yourself specifically to counter an early SC? In the case of the Kraken, it seems that just chaffing him to death is quite possible what with the fact that his protection is subpar, doesn't naturally regenerate, and that he's not immune to his own poison. You'd need some sermon of courage spam to fight that way, though. Plus, drowning the enemy in bodies is a way to fight mind hunters in small quantities too. Do you really need to beat him so much as just make him understand that it will be more painful to wipe you out than it will be to create a relatively friendly border that allows the two of you to attack someone else.

It might help to rush early to some important anti-SC spell that you can spam as he tries to munch on your army or to construction so you can spam ethereal crossbows, which are pretty damn frightening to that kind of unit early.

I might be missing something, though.