If you are playing for the first time, community consensus from Reddit's Far Cry community highlights:

Adds four rare animals to hunt in single-player and the Predator Bow for multiplayer. 🛠️ Technical Fixes for Modern Systems (v1.05)

Grants an exclusive dagger (the Tribal Knife) and early access to the tattoo editor.

Adds four missions featuring the character Hurk and his bomb-carrying monkeys.