Are these things necessary for Salvation?

Are these things necessary for Salvation?

Law keeping,
Obedience, 
Water Baptism,
Keeping Jewish rituals,
Abstaining from foods?
Charity,
Sinner’s prayer,
Good deeds,
Church attending,
Living Holy,
Repenting for sins,
Stop Sinning,
Communion,
Giving Tithes Offerings,

ABSOLUTELY NOT.
Romans 7:14-25;
1 Corinthians 3:10-15