Complex sentence: Across all these games, the development team developed a sturdy understanding of his personality, and there was a lot of effort put into making the character attractive to the audiences as a result of being the only playable character.
Split into simpler sentences: Across all these games, the development team developed a sturdy understanding of his personality. For the titles, there was a lot of effort in making the character attractive to the audiences as a result of being the only playable character.