[MikeyG]

Level 68 – Need 9,765,204 exp
Yes, there is a repeatable here, but it is hard, long, and take forever. So work these quests to help you get through this level:
60-70 - Spider Attack 3 – 1,114,500 exp
68 - Disappearing Diggers – 671,200 exp
68 - Trees turning sinister 1 – 735,600 exp
68 - Trees turning sinister 2 – 534,000 exp
68 - Lost Heart 1 – 727,400 exp
68 - Lost Heart 2 – 330,600 exp
68 - Hopeful Killer – 917,800 exp – Repeatable – work until you level

Since im now 68 I'd like to say the quest u say hard long and take forever is muds right? Well one repeatable muds quest for me ( soloing ) took a shorter amoutn of time then half the quests you listed xD