Translations needed

Good day. I'm an inspiring writer that would like to use a bit of Japanese in my book. If anyone could be so kind as to translate these words and sentences it would be greatly appreciated.

"Heathens!" (said angrily, it could be a synonym of the word, if so, please state the new word)
"Unholy!" (same as the first word)

"Is that you?" (character is addressing someone that he used to know from a few years back and is clarifying if she really is that same person)
"It really is! My have you grown! How long has it been… two years?" (this is continued from the first sentence)

That's all for now. Thanks in advance for your help.

Hello.
If you want to know real natural Japanese,
I think you may want to explain that speaker's sex, age and their relation.

For example, roughly...
"Is that you?"
あなたなの？ - speaker is female
きみなのか？ - speaker is male, to female
お前かよ？ - speaker is male, to close friend
"It really is!"
本当に！ - speaker is female
マジかよ！ - speaker is male, to close friend

The speaker of both sentences is male, towards a female. I'm sorry, but I neglected to state that I would like the translation in Romaji if it's not too much trouble.

For reference, male towards a female...

Heathens!
"Shiturei dana!" (What a rude thing!)
"Fuzakeru na!" (Don't be stupid!)
"Bachiatari na!" (Heaven will punish you!)

Unholy!
"Hidoi!" (Terrible/awful!)
"Kudaran!" (Piffle!)
"Bakabakashii!" (Nonsense!)
"Kitanai!" (Dirty/unfair!)
"Fuketsu na!" (Dirty!)
"Kegarawashii!" (Filthy!)

Is that you?
"Kimi kai?"
It really is! My have you grown! How long has it been… two years?
"Uso daro! Michigaeta na! Are kara... 2nen kana?"

BTW, I put spaces to make clearly understandable, but you can write without any spaces, I think.

I believe other experts will correct me　because I'm not good at English.