Complex sentence: In the as yet unconfirmed Tsukihime 2, Enhance is one of the six Dead Apostles who plotted to assassinate the sleeping Arcueid Brunestud, but because of his own motives, he betrayed his companions and formed an unstable alliance with Arcueid's guardian, Satsujinki.
Split into simpler sentences: In the as yet unconfirmed Tsukihime 2, Enhance is one of the six Dead Apostles who plotted to assassinate the sleeping Arcueid Brunestud. However, because of his own motives, he betrayed his companions and formed an unstable alliance with Arcueid's guardian, Satsujinki.