Complex sentence: Donnie is ordered by Sunil to ice everyone on the ship to make sure that nobody leaves alive, but as Donnie tries to freeze the ship, he is sniped by Skye as his body is frozen upon falling into the water.
Split into simpler sentences: Donnie is ordered by Sunil to ice everyone on the ship to make sure that nobody leaves alive. As Donnie Gill starts freezing the ship, he is sniped by Skye as his body is frozen upon falling into the water.