1. Islam teaches salvation through works and self-righteousness.
In this regard, Islam is no different than any other false religious system, including Mormonism, Jehovah's Witnesses, Budhhism, and Orthodox Judaism, to name a few. Islam has in common with these that mankind ultimately plays a central role in his eternal destination, and that if he does enough good deeds and lives a good life he will ultimately be rewarded in the afterlife. Christianity is unique among world religions because the Bible tells us that we can do nothing to earn or deserve our salvation, but that our salvation comes through faith in Jesus Christ and his blood atonement sacrifice for our sins.
Islam teaches that two recording angels follow each of us and they keep a tally of our good and bad deeds. On judgemen day the good and bad deeds will be placed on opposite sides of a scale and we hope to have enough good deeds to offset the bad ones. Muslims live and die by the scales. Problem: a Muslim will never know completely if he/she has enough good deeds on account; assurance of salvation cannot be known until judgment day.
Sura 21:47 - We shall set up scales of justice for the Day of Judgment, so that not a soul will be dealt with unjustly in the least
Sura 23:103 - Then those whose scales are heavy, they are the successful. But those whose balance is light, will be those who have lost their souls, in Hell will they abide.
Sura 101:6-9 - Then, as for him whose scales are heavy (with good works), Will be in a life of good pleasure and satisfaction. But he whose balance (of good deeds) will be (found) light, Will have his home in a (bottomless) Pit.
2. Islam is more than just a religion; it is a complete way of life.
Many in the West think of Islam as just another religious viewpoint among other major world religions. But to a Muslim, Islam is more than just a religion. Islam is not just a method of fulfilling religious obligations: praying, giving, fasting, pilgrimmage. Islam encompasses these and much more. To a Muslim, the goal of this life is to emulate the prophet of Islam, Muhammad, in every respect.