A quiz to test your knowledge on FPS games. Are you good enough to get a perfect score?

Author Comments:

Well after some thinking I decided to make a follow up to my last quiz but on this one I improved and changed many things people complained about in the last on. Also you can see this one is based solely around FPS games. So some of the questions are about game's dating back to the early 90's! And last I fixed all the problems. So as a gift I added a score board and changed some other things....Hope You Enjoy. C&C?
Can you find the six (kinda) Easter eggs?