Fullmetal alchemist

has anyone played it before. i have and im on the last level. The boss i hated the most was the bird boss. he got on my nerves so much. The professer had a dirty little secret he kept from us. he tells you if you get past a certaint part. from when i was at the church and whem carmillia showed up knew that greta was a n alias for her. anything you guys want to share?