How do you get 100% completion in Transformers Revenge of the Fallen Decepticons DS?

I currently have 85 % completion and there's seemingly nothing for me to do. I have completed the story and have gold medals on all the missions.How do you get 100% completion in Transformers Revenge of the Fallen Decepticons DS?Have you been playing via WiFi? Do you have every weapon and node in the medical bay? And every stat maxed out? I think you can get the last 15% in these points.