남 욕 많이 한다-> He or She speaks ill of others very much.
욕 -> a swearword, four letter words
시벌년 is one of variations of 씹할 년 and its sound has changed to 씨발년 -> 씨벌년 -> 시벌 년 ". The original root form of 씹하다" means "to fuck". So, literally, 시벌년 means a girl to fuck but it's nothing but a very vulgar swearing word.
파뤼 -> Yes, I think they wrote "party" in the Korean alphabet as it sounds in American English (not British English).
"개팬다" can be interpreted in many ways according to the situation but normally, it means great, awesome or cool.