Talk about your thoughts, your understanding of the paper, and your confusion. The tutor should not have that much time to help you write it completely. I can only say that I will give guidance or outline, or if you encounter problems in a chapter and can't start, I will help you solve them. If it's all hope, there's really no need to talk unless you have a very good relationship. If you are a mentor, your mentor will usually be very happy. After all, you are his student, and he wants you to graduate smoothly. So tell him sincerely and ask for help!