It's hard to really make any comments without knowing what you did.
They're correct that you shouldn't write about things in your introduction which aren't directly related to your study (even if they are really smart critiques),and you definitely do not need to write the procedure, results, limitations/strengths of every study you mention in the intro.
The APA publication manual is a good guide to writing research.
From the APA publication manual on how to write an introduction:
Introduce the problem.The body of a manuscript opens with an introduction that presents the specific problem under study and describes the research strategy. Because the
introduction is clearly identified by its position in the manuscript, it does not carry a
heading labeling it the introduction.
Before writing the introduction, consider the following questions:
� Why is this problem important?
� How does the study relate to previous work in the area? If other aspects of this study
have been reported previously, how does this report differ from, and build on, the
earlier report?
� What are the primary and secondary hypotheses and objectives of the study, and
what, if any, are the links to theory?
� How do the hypotheses and research design relate to one another?
� What are the theoretical and practical implications of the study?
A good introduction answers these questions in just a few pages and, by summarizing the relevant arguments and the past evidence, gives the reader a firm sense of
what was done and why