Force categories to show whole posts?

Good afternoon.

I have a question which is really bothering me.
Trying to find a solution, how to enable full post view when somebody clicks on category name.

In other words – right now when I click category name – it shows me a list of all posts in that category, but only subject lines. I want to see a full post body, which means – subject line, text of my posts and all included images if there is any.

Checked all settings and found some interesting things in FAQ while been searching for an answer, but still – haven’t found a solution ??

Please help.