Ok then

Do Good because it is good. That's it. Shit ain't hard.

Say what you will about CS Lewis, but Aslan's whole "it doesn't matter who you believe in, so long as you do good" deal is what a benevolent deity should be.
- And Leukemia in children
  
  He created freedom, that's something different.
- RIP Susan and the atheist dwarves though.
  
  Fair point about Susan, but the dwarves literally chose not to step through the door into the light as the world was ending around them. It might be that they did have ideological reasons to reject Aslan, in the same way that an atheist at the gates of heaven might cite aspects of the abramic faiths as reason to not enter, but IIRC the narrative doesn't give any indication of that.

Let's assume the bible is true for a moment. In the new testament God sends his son, Jesus, to die for our sins on the cross which makes the old testament obsolete. It's also stated multiple times that their mercy is now beyond what we can imagine therefore everyone goes to heaven cleansed of their sins, regardless of who they were and what they did.
Hell and shit was just created to extort peasant in medieval times.
- Jesus came to die for the sins of Man, not the sins of all men. The famous John 3:16 is "God so loved the world who sent His only Son, so that whomever may believe in Him shall not perish but have everlasting life."
  The idea is that murders, rapists, and general good people can go to heaven so long as they believe that Jesus died for them.
  Then again, here we are, debating semantics of a book that has been the cause of wars and famine.
  
  Yeah, let's not put too much thought into it.
- People do a lot of work with Matthew 5:17 to wave this away.

Well, in hell we can hang out with the old Romans, the old Greeks, the Hindus, the indigenous tribes from all over...etc.
The Christian god knew in advance I was going to be this way, anyway, right? And if god willed it I would change my ways.

This is why religions are a scam. Most don't hold up the scrutiny to their own teachings.
- I have a feeling your judgement of religion as a whole is solely based on abrahamism
  
  Nope. Hinduism is the same in my experience.

"Good" in christian terms not only means being nice and caring for your fellow humans but everything that makes God's creation work: accepting that he knows how it is supposed to work and doing what he says instead of trying to fix this world solely by ourselves. IMO reasonable from a believer's point of view.
- doing what he says
  Ever notice how "what he says" just so happens to coincide with the believers' wishes? Suspicious, that.
  
  Also however it ends up was what he willed anyway. The whole thing goes tits up: well God is testing our faith, but we must continue to believe. Everything works perfectly: God has blessed us. It removes all personal responsibility from any decision.
- Except he has the power to fix it all and doesn't anyway? Explain childhood cancer. Explain natural disasters. Explain why millions have to suffer because of the actions of others, regardless of whether those suffering are following God's actions.
  Is it purposeful cruelty or does he just not care?
  
  Did we ask him to fix it? Did we care about him in any way? Individuals may did but he wants to save more than just a 0.1%. And what is temporary death against eternal life in a "fixed" world? The suffering before is the much worse part. But even this can be quite a cure to many of us. We, seen statistically, don't become "good" from being rich and having a carefree life. And much less we ask for God to fix the world for the others that are suffering.
  He is waiting for us to change our minds, admit that we were wrong, that we weren't able to fix it ourselves. Pretty selfish, you could think. Seeking for glory, letting people suffer until the come crawling back to you.
  But then again, we brought this on us ourselves. We decided we were better off on our own, not made to serve God in a perfect world with no suffering. And also, tho whom would all the glory in the world belong if not to its creator? How could an almighty God be selfish only because he decided the purpose if his creation?
  
  I've got a feeling your mind is already made up on the matter and no amount of explanation would change that.