Okay, so I decided to go ahead and make a video guide for the collectibles on Vergil's Downfall DLC. I cannot take credit for making the videos. All the credit goes to the user of "GamerForEternity" on youtube. The videos are done by level and they did a great job of showing you exactly what you are looking for. Good luck!
Mission 5: No collectables
If you have any questions or concerns please let me know. I this helps everyone!