Glitches I've come across (SO FAR)
I killed 150 zombies with analog controls – trophy DID NOT unlock but icon at bottom right in game said Trophy unlocked and logged it as complete.
I was playing story mode on my own as I have been able to get online but found it rarely tracks my progress even when we are in the same point in story. I completed several missions over the space of 2 hours on my own and noticed the save icon symbol so decided to have a break and turn it off (before turning off I also clicked load from last checkpoint and it went back to the last mission I had completed). When I turned it back on I had lost all that gameplay and it had gone back to its previous save file meaning I will have to repeat all those missions and lose all my progress.