You are scared. You are only afraid because you yourself created a monster image in your head. God is God Almighty. The One and Only God. Unlike and incomparable to His creatures. Suffering is not always a bad thing, and pleasure is not always good. Okay. No Problem. Thanks for the discussion.
Islam is guaranteed salvation? You know you are going to heaven?
Yes. Islam means submission only to the will of God Almighty. God decides everything. But at least as Muslims we hope to go to Heaven in return for our willingness to follow his orders and stay away from his prohibitions.