So, in your estimation, God can judge wicked people with suicide and other forms of death. But Christians acting in self defense can't be a means of God’s judgement?Of course not. But he judges wicked people with it and other forms of death. Judas for one.
“For the wrath of God is revealed from heaven against all ungodliness and unrighteousness of people who suppress the truth by their unrighteousness,” (Romans 1:18) (NET)
“He that believeth on the Son hath everlasting life: and he that believeth not the Son shall not see life; but the wrath of God abideth on him.” (John 3:36) (KJV 1900)