Justice is a fan-made global mod.

How is the balance?
Is everything okay? Or not?
I'm especially interested in Cerberuses.

The balance is generally good, but it needs a little testing. As for Cerberuses, perhaps their damage should be left as is. Now you can choose between Fire Hounds and Cerberuses, although the Cave Dweller's "Killing Blow" ability should have a +3 damage bonus instead of +4.