-Creatures have a bloodlust bar . It represents how aggresive a creature gets. When high enough it greatly increases creature speed and damage. It raises:
1.When they get wounded in battle. Even more rapidly If they get wounded by a natural enemy of theirs.
2.When they miss a target.
3.When they are upset
4.When they are tortured
5.When they are in prison
6.When in need of murder in case of Horny.
7.Creatures avoid using some abilities and spells, unless their bloodlust bar fills enough. You can force using them in first person.