It is God who saves through the Church, which is the body of Christ.
This is the most accurate description. However, you don't hear much about how one is saved because everyone is too busy being worried about offending others who practice another religion or don't practice a religion at all.
If it weren't for the misunderstanding with the Pope's recent, infamous "Atheists are Redeemed" homily, we would have never heard exactly what the Church teaches regarding the necessity of salvation through the Church. And even with that we had the priest who was supposedly clearing up that misunderstanding referring to original sin as *so-called* "original sin".
Is it any wonder that no one knows what the Church really teaches? Many may not like what the author of this article said, but there is a reason why he could write that view of the Pope/the Church.
For by grace are ye saved through faith, and that not of yourselves, it is the gift of God.