Complex sentence: Andross made a vow of revenge when his parents were killed in a Cornerian Military Experiment and became Head Scientist of the Cornerian Academy, building Hyperlight Drives, Polo Pigs, Antigrav Machines, and Androids.
Split into simpler sentences: Andross made a vow of revenge when his parents were killed in a Cornerian Military Experiment and became Head Scientist of the Cornerian Academy. Building Hyperlight Drives, Polo Pigs, Antigrav Machines, and Androids.