Barriers to salvation? Barriers to “getting to heaven”?
You are wrong. I’m trying to understand what Catholics regard as essential. Do you always put words in other people’s mouths?
Normativly? Or for this individual? For the individual in your story a baptism of desire will suffice because that is the best they can offer God. They have no priest who can offer Mass or confession, they have no foundation for prayer other than what the scriptures say, thus God’s Mercy will triumph and this person will be save despite the fact that they can not participate in the normative plan of salvation.
For us, we need confession to deal with sin after baptism. More over, for us who are not on deserted islands we
must eat Christs body and drink His blood, as it says so clearly in the Gospel
Joh 6:51 I am the living bread which came down from heaven: if any man eat of this bread, he shall live for ever: and the bread that I will give is my flesh, which I will give for the life of the world.
Joh 6:52 The Jews therefore strove among themselves, saying, How can this man give us his flesh to eat?
Joh 6:53 Then Jesus said unto them, Verily, verily, I say unto you, Except ye eat the flesh of the Son of man, and drink his blood, ye have no life in you.
Joh 6:54 Whoso eateth my flesh, and drinketh my blood, hath eternal life; and I will raise him up at the last day.