Call Of Duty Ghosts on PS3 is a decent game in it's single player campaign. But the story was never finished, at the end of Call Of Duty Ghosts campaign from what I remember on my first play through, the villain survived and drags you away and that was the end of the single player campaign.
I never had too much trouble with the dog character in which you can't use too often because the dog will die and if the dog dies you lose and have to start over from a checkpoint
and the game gets harder with one mission navigating through a bunch of hungry sharks