1. Reward from achievement: Glory of the Pandaria Raider.
2. Achievements you can get:
    Must Love Dogs
    Sorry, Were You Looking for This?
    Straight Six
    Overzealous
    Like an Arrow to the Face
    I Heard You Like Amber...
    Power Overwhelming
    Who's Got Two Green Thumbs?
    Heroic: Stone Guard
    Heroic: Gara'jal the Spiritbinder
    Heroic: Elegon
    Heroic: Imperial Vizier Zor'lok
    Heroic: Garalon
    Heroic: Amber-Shaper Un'sok
    Heroic: Protectors of the Endless
    Heroic: Lei Shi
    Anything You Can Do, I Can Do Better...
    Getting Hot In Here
    Candle in the Wind
    Less Than Three
    Timing is Everything
    Face Clutchers
    The Mind-Killer
    Heroic: Feng the Accursed
    Heroic: Four Kings
    Heroic: Will of the Emperor
    Heroic: Blade Lord Ta'yak
    Heroic: Wind Lord Mel'jarak
    Heroic: Grand Empress Shek'zeer
    Heroic: Tsulong
3. Your character's level should be 90+.
4. ETA: 1-3 weeks.