2. If you played the RO you should know few but it's fine... All Transcendent Class(Except for the 4 Unlockable) Lord Knight,Paladin,Assassin,Sniper,High Priest,Champion,High Wizard,Whitesmith,Clown, and Gypsy.
3. All of it.(Dark Knight,Shaman,Jonda,Kafra)
What's harder? Playing in the hardest mode in the game or having a materialistic girlfriend?