What is the basic difference between the world religions and true Christianity?

There are multiple differences on many levels. However, if you are looking for just one simple answer here it is: True Christianity requires only one thing. That one thing is complete faith in Jesus Christ as your only means of gaining access to Heaven. John 11:25-26Jesus said to her, "I am the resurrection and the life. Whoever believes in me, though he die, yet shall he live, and everyone who lives and believes in me shall never die. Do you believe this?" All wrong views of Christianity and other religions like Islam, Buddhism, Hinduism etc believe you must do your own work to gain access to Heaven. The hardest to distinguish between are the various views of Christianity. Most will preach faith in Christ and then add good works etc. In reality the good works a Christian does comes from Christ, not from self. It is God working in you. It is the “evidence” of your faith. It is the “tree that bears good fruit.” This in no way merits your entrance into God’s Kingdom. We are all still sinful people, even when we are saved. It is Christ that separates us from the penalty of sin. All our righteousness are but filthy rags before God. Isaiah 64:6