Uncanny X-Force Volume 3: Dark Angel Saga Book 1

Collects Uncanny X-Force #8-13. The Age of Archangel! X-Force has returned from the twisted Age of Apocalypse 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 all life on Earth is forfeit unless X-Force can stop Archangel - by destroying him.