Complex sentence: Bothos kills Vortix and a female warrior, Dias kills two Picts, and Brick kills Aeron and the last Pict warrior; however, before the Picts are defeated, Brick is killed by a spear thrown by Etain who Dias then kills.
Split into simpler sentences: Bothos kills Vortix and a female warrior, Dias kills two Picts, and Brick kills Aeron and the last Pict warrior. However, before the Picts are defeated, Brick is killed by a spear thrown by Etain who Dias then kills.