Do you think adulterers murderers and heinous abusers are all the same kind of evil?

No, I do not. There are degrees and those you mention are spread wide apart. 

I do not.   These are three totally different behaviors.

Not at all. Some people are just not really monogamous by nature and make poor spouses. That's extremely different than being a murderer. And murderers come in all sorts of ways. Some people have killed on mistake. Some people have killed in self protection. Some people kill regularly for money or pleasure or pain. Heinous abusers are in their own separate category of evil. 

Hi to answer your question, based on the Bible and Gods standards, 1 Corinthians 6:9-10 states: 9) Or do you not know that unrighteous people will not inherit God’s Kingdom? Do not be misled. Those who are sexually immoral, idolaters, adulterers, men who submit to homosexual acts, men who practice homosexuality, 10) thieves, greedy people, drunkards, revilers, and extortioners will not inherit God’s Kingdom. However it gets a bit deeper than that, please see the article we attached below entitled, What Is Sin?

https://www.jw.org/finder?wtlocale=E&docid=5020152...

Not adulterers but sometimes affairs end up in murder. The cheating husband will sometimes murder his whole family so that he can be with his mistress (the most famous murderers who have done this are Scott Peterson and Chris Watts). There are many more cheating men who have murdered their families that don't make it on the news. You should keep this is mind when you cheat with a married man who has young kids. And sometimes the cheating husband will bring the mistress to his house when his kids are home. I feel that borders on child emotional abuse. Because the kids know what is going on and it can upset them a lot. If you want to cheat, do it elsewhere.