What will be the state of someone who performed deeds that necessitate Paradise and deeds that necessitate Hell, then died a natural death on the Day of Judgment?

No one can be judged to be among the people of Paradise or Hellfire except for those about whom the Prophet, peace and blessings be upon him, informed us. As for a Muslim who performs good deeds yet commits sins, there is hope for him to enter Paradise and fear for him regarding Hellfire. He is subject to the will of Allah Almighty, and his ultimate destiny is Paradise as long as he remains a believer.