is there any qualifications/requirement for us to go in heaven after we die?

Its not just a matter of believing.Satan even believes.The Bible clearly says that " Not everyone who says to me "Lord Lord will enter the kingdom of heaven,but who does the will of my father who is in heaven" Matt7:21.Does that mean we have to work in order to get there? Not if your refering to the " works of law" but if your refering to the works of faith,then yes. We are saved by grace alone with faith that works.If we claim to have faith in Jesus,then we must act it. I believe once we accept Jesus into our lives then we become new and want to do the things which our right and pleasing to God. I know in my heart,I will someday stand before God and be in heaven and to me thats awesome.

Why do you have to believe in God to go to heaven? Surely he is a forgiving man, and if you haven't done anything wrong in your life why should you be punished in hell? What about those people who have never heard of God should they go to hell?

Yes The Good Deeds Are The Qualification. And Without A believe in God How can You do a good deed? It is because that we want to make God Happy and Pleased with us We do good deeds.

there's no certainty that there is an actual requirement for people to go to heaven if they die. im not good at verses and chapters of the bible but it stated some issues about who could only enter the gates of heaven. in some chapters it stated that it is not the things that we do that would count but the way we live our lives and how we practce our faith. maybe the safe "pass" would be to keep your faith in God and do whatever is right and just.