Complex sentence: He walks him to the exit when he steps on a land mine, before he dies he tells Cole that the "Kaftar" is real and when its done with himself it will come for Cole, then dies.
Split into simpler sentences: He walks him to the exit when he steps on a land mine. Before he dies he tells Cole that the "Kaftar" is real and when it's done with himself it will come for Cole, then dies.