The Question and Answer section for Doctor Faustus (Marlowe) is a great resource to ask questions, find answers, and discuss the novel.
The agreement is a simple one, Faustus sells his soul to the devil in exchange for twenty-four years of absolute power. In the bargain, Faustus also received Mephostophilis (Lucifer's representative) as his servant. After twenty-four years,...
Sorry, I can't go through the whole story and find every allusion. This is only a short answer space.
Which particular excerpt are you referring to?