A lot of glitches in the VoG:
1. Go through the portal and end up right back where you were instead of back in Atheon's room.
2. Regenerating Minotaurs in the Past Portal
3. Detainment shields coming up AFTER the Templar has teleported.
A "zoo" of disconnection errors
Weak story line. You have read the grimoire cards on a computer or mobile device to get more of the story.
There are other things as well, but as I said, I am still very much enjoying the game despite these things.