Bear Apocalypse - Terminated a dozen (12) bears in a single blow.

 Bear Bane - Terminated six bears in a single blow.

 Ca-ching! - Created your first treasure chest

 Kings before Dukes - Built your first mega-castle using four or more mansions

 Royal Welcome - Built your first castle

 Showoff - Built your first mega-sky-castle using four or more castles (yeah,
yeah, we know you're good at this!)

 Triple Castle - Built your first floating Triple Castle ... the pinnacle of
civilization!

 Upper Class - Built your first mansion

 Upper-Upper Class - Built your first two-tier mansion using four or more houses

 Walking on Air - Built your first sky castle