Complex sentence: When the first blue page is put into the book, Achenar is able to barely see someone looking into his blue book, he implored the player to find more blue pages which were scattered in the four remaining ages of Myst.
Split into simpler sentences: When the first blue page was put into the book, Achenar was able to barely see someone looking into his blue book. He implored the player to find more blue pages which were scattered in the four remaining ages of Myst.