Complex sentence: Meanwhile, the second Idiran, who was mortally wounded but not killed, has managed to set one of the trains for a collision course, and as it smashes into the station, Xoxarle springs his ambush, and Yalson is killed.
Split into simpler sentences: Meanwhile, the second Idiran, who it turns out was mortally wounded but not killed, has managed to set one of the trains for a collision course. As the runaway train smashes into the station, Xoxarle springs his ambush, and Yalson is killed.