In order:Bermesiah,Silver land,Ellia Continent,Xenia Continent
Bermesiah:
1.Trial Forest
2.Trial Tower
3.Outer wall of serdin
4.Kerrie Beach
5.Orc Temple
6.Gorgos' Dungeon
7.Gorge of Oath
8.Marsh of Oblivion
9.Forsaken Barrows
10.Forgotten City
11.Gaikoz's Castle
Silver Land:
1.Whispering Woods
2.Ruins of the Silver Knights
Ellia Continent:
1.Partusay's Sea
2.Ellia Continent
3.Temple of fire
4.Hell Bridge
5.Kaze'aze Castle
6.Kastulle Floors lower
7.Kastulle Floors upper
8.Battle for Bermesiah
Xenia Continent:
1.Xenia Border
2.Temple of Cuatal
3.Valstrath
4.Wrym's Maw
That's all the Dungeon(stages) for now. Hope this helps.