list of all posts on page

I want to create a portfolio-page. I know there are plugins, but they don’t do what I want.
I want a page which shows several posts from 1 category (like index.php), for that purpose I’m using category-4.php. At top of that page I want a menu with all the posts in that category. This menu also has to be at top of the specific single.php.

Can anybody give me a hint how to do that?