In Christianity there are 3 main divisions: Roman Catholicism, Eastern Orthodoxy and Protestantism. (There is also Oriental Orthodoxy and the Church of the East, but they are much smaller than the others).
In Protestantism there are a variety of views, but the majority of them seem to believe that if you are a Christian you are "saved" and will go to heaven, it doesn't matter if you are a good person or an evil person; as long as you believe in Jesus your sins are forgiven, nothing bad that you do will be punished in the afterlife and you will be given infinite rewards in heaven just because you believed in Jesus. (On the flip side if you don't believe in Jesus you go to Hell and get brutally tortured and violently raped by demons forever and ever)
In Catholicism and Eastern Orthodoxy it is a bit more complicated. You don't automatically go to heaven just because you are a Christian. Instead you have to be a good person and repent until you become "perfect". This is a long and hard process and if you don't complete it before you die then it continues in the afterlife (Catholics say it happens in a place called Purgatory, Orthodox are more vague). It is possible to be a Catholic or Orthodox and still go to Hell. If you commit serious sins and don't confess them or repent of them, you end up in Hell, it doesn't matter if you believe in Jesus or not.
My question is, which system of salvation is Islam more similar to? Do you automatically go to heaven if you are a Muslim, like in Protestantism? Or do you have to work and grind away (with the assistance of God) until you become perfect like in Catholicism and Orthodoxy?
edit: I just realised there's another possibility: the stereotypical "Scales of justice" view. This is where your good works are placed on one side of a scale and your bad works are placed on the other side, and if it turns out that you've done more good than bad you go to heaven but if it turns out you've done more bad than good you go to Hell.