How does the Church view of other Religions?

The Church respects everything in other religion that is good and true .She respects and promotes freedom of religion as human right. Yet she knows that Jesus Christ is the sole redeemer of all mankind. He alone is " the way , and the truth, and the life " - John 14:6

However anyone who recognised that Jesus Christ is " the way and the truth and the life " but is unwilling to follow him cannot find salvation by other paths.This is what meant by the saying, "Extra ecclesiam nulla salus" , which literally mean in English as "outside of the Church there is no salvation".

Matthew 7: 15-20
15 “Watch out for false prophets. They come to you in sheep’s clothing, but inwardly they are ferocious wolves. 16 By their fruit you will recognize them. Do people pick grapes from thornbushes, or figs from thistles? 17 Likewise, every good tree bears good fruit, but a bad tree bears bad fruit. 18 A good tree cannot bear bad fruit, and a bad tree cannot bear good fruit. 19 Every tree that does not bear good fruit is cut down and thrown into the fire. 20 Thus, by their fruit you will recognize them."

Jesus himself warned us about false religions and false prophets which come after him , so it is clear that Jesus is the only way to Heaven . 

Buddhism , Hinduism and Sikhism is also good faiths that promotes humanity and respect to the nature .