So, How can you “have to” act in order to play as a standard Goliath Barbarian? To start with, you need to point out bravery but also combat smarts. Whilst you don’t have to play your goliath based on the lore, you are able to, and it will certainly be interesting. The recomm

Bear – any creature that can be a Risk to them, within five feet and see/hear/fears them, gets a disadvantage in attack rolls. However-unless it was intended- this makes them the prime goal of their enemy/ies Nevertheless they do get resistance to ALL damage when raging apart from psychic