Complex sentence: Chan, angry with Centipede for betraying him and S.H.I.E.L.D. for constricting him, attacks both, killing, among others, Quan and the Centipede head doctor Debbie.
Split into simpler sentences: Chan, angry with this betrayal and with S.H.I.E.L.D. for constricting him, attacks both. He kills, among others, Quan and the Centipede head doctor Debbie.