1) Compulsive 1) Purist 2) Stickler 3) Traditionalist 
• (n.) One pretending to perfection; esp., one pretending to moral perfection; one who believes that persons may and do attain to moral perfection and sinlessness in this life.
Per·fec'tion·ist noun One pretending to perfection; esp., one pretending to moral perfection; one who believes that persons may and do attain to moral perfection and sinlessness in this life. South. 
[n] - a person is displeased by anything that does not meet very high standards
noun a person who is displeased by anything that does not meet very high standards
one displeased by anything that does not meet high standards