Otherlands: Which to Go to

Many JP players including me think the toughness order of the Otherlands is Baruoki > Rattle > Elzion.

Elzion First

So my recommendation is to conquer Elzion first, and make and upgrade Aceto Vita in the first place. It might be difficult to defeat Galiard at 4th stage of Elzion without AS Suzette and 5 star Amy (available at Orge Wars Vol. II) in the early version. But you can upgrade Aceto Vita up to the level of 6 without it.

Rattle Second

You can traverse 1st and 2nd stages of Rattle before Elzion, and make and upgrade some of the Rattle weapons. After Water type mages, Levia and Saki (through IDA II and its After), and very preferably Shinne join to your party, try 3rd and 4th stages of Rattle to upgrade Ulcanactos and Bulk Faust to the higher level. High SPD mages with Aceto Vita ease the completion of those stages.

Baruoki Third

Finally, AS Suzette with well-upgraded Ulcanactos and a higher SPD mage with Aceto Vita can effectively lighten the burden of non-Weak mobs, Terrors and Bosses in Baruoki.