Complex sentence: Simmons was murdered during a mission in Botswana for the USSG's Operation Knightstrike by best friend and fellow mercenary Bruce Stinson (also known as Chapel), at the order of Director Wynn, and was sent to hell because of his life as an assassin.
Split into simpler sentences: Simmons was murdered during a mission in Botswana for the USSG's Operation Knightstrike by best friend and fellow mercenary Bruce Stinson (also known as Chapel), at the order of Director Wynn. Afterwards, Simmons is sent to hell because of his life as an assassin.