Ixazakuhn slides into 60
Ixazakuhn leveled in record time, only 9 days, 13 hours of play time. The 50s seemed to go the fastest, but I think it's because she didn't travel as much as the other 3 did. She would go to an area, and not leave until the quests were done, or not able to be completed at that time. Luckily, she was able to use the mailbox to send stuff to be "dealt with" in her absence!