Uncanny X Force TPB Volume 04 Dark Angel Saga Book 2

"The Age of Archangel! X-Force has returned from the twisted Age of Apocalypse with the Celestial Life Seed, their only hope to prevent their friend Angel from transforming into the monstrous Archangel, heir to Apocalypse. But X-Force is too late: Archangel has already ascended - and he stands poised to succeed where his dead master failed. All life on Earth is forfeit unless X-Force can stop Archangel - by destroying him. But can a team of hardened killers assassinate one of their own? Can Psylocke kill the man she loves? And even if X-Force is willing to cross that line, has Archangel become too powerful to stop? Collecting UNCANNY X-FORCE #14-19."