Complex sentence: Doing this rewards the player with "Hunie", an in-game currency that can be used to upgrade the player's stats, which allow the player to earn more points during dates, increasing his or her chance of success.
Split into simpler sentences: Doing this rewards the player with "Hunie", an in-game currency that can be used to upgrade the player's stats. These stats allow the player to earn more points during dates, increasing their chance of success.