BloodRayne: Betrayal

Ancient vampire skulls are red-like skulls scattered all across the game. To keep track of all the vampire skulls, simply check the chapter statistics during the chapter select menu. It will tell you in order the name of the chapter, your score, your rank and finally how many skulls you’ve collected for that chapter. There are 50 ancient vampire skulls total. Example below…

Chapter 1
Forest Assault
Score: 101550
Rank: S - Dhampir
Skulls: 4/4

There are walkthroughs across the net to help you find them. You may not need them since the game makes it easy for you to see them.

Here is a video to show you exactly where each skull is.