The character I have most of them done on isn't high enough to enter Naxx so this is why I am asking.
Love Is In The Air question
Yes, if you get different achievements fully completed on different characters, they will all count towards the "Love Fool" title.
No, if you get 'parts' an achievement done on different characters, you will not get that single achievement. Prime example: [I Pity The Fool] - you will need to complete all "parts" of this achievement on one character to get the achievement on all your characters (then it will count towards the main achievement of Love Fool.
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