Realm Mode Progression using New Frontiers
You may do the keeps in the following order to avoid having to do all of the Normal Mode quests and acts in Realm Mode. The keeps rise in level following Normal Mode Act progression. Completing the Diablo III encounter will allow you to travel to Act 5 to complete the remaining Normal Mode quest line to kill Baal in Realm Mode.
Blood Raven Caer Hurbury Keep
Andariel Caer Renaris Keep
Duriel Caer Boldiam Keep
Mephisto Caer Benowyc Keep
After killing Mephisto, you will need to break the 4 seals on top of Caer Benowyc Keep
You have started the Diablo III encounter. You will follow the fire on the ground leading North West from Caer Benowyc Keep to Agramon Milegates.
Once through both of the Milegates, continue North West to the middle of Agramon where Diablo III's tower is located.
After taking down the door to the tower, prepare to face Diablo III
The Diablo III encounter is on a 30 minute reset timer.