Middle-Earth: Shadow of War Standard Edition
Hatreds work like the opposite of Fears: If a Uruk with a hatred of a specific thing comes into contact with that which he hates, he will become enraged. Becoming enraged will often make an Uruk even stronger, replenishing health, becoming resistant to damage, and dealing extreme amounts of damage.
Only the stronger Uruks of Mordor have invulnerabilities to your attacks. These invulnerabilities make them immune to some of your attacks, and a bad string of invulnerabilities can make it extremely tough to kill some Uruks. In these cases, and Weakness must be exploited.