If you own a PlayStation 4 (PS4) or PlayStation 5 (PS5), you can currently get Aloy, the main character of Horizon Zero Dawn as a free playable character. You are also rewarded a 4⭐ Predator Bow. The only requirement is that you must be Adventure Rank 20. Once you reach that ranking, go to your Mail from the main menu. Claim Aloy and the Predator Bow from there.