Bayne's Climb: Book I of The Sword of Bayne

Bayne kul Kanon pursues a dark wizard across a decade and eventually up a mountain path, and when the path runs out, up the side of the mountain itself. Why does Bayne seek this wizard? Because Bayne is a warrior without a past. Ten years earlier he woke amid battle with no memories, his only ally the wizard. His enemies, numberless.