From what I can tell, their evolution is happiness-based. Depending on your training regimen and the way you treat it, it could take place at level 10 or level 50. Leviathan evolved after approximatively two months; I've found that massaging her softly after training made her reliably happy.
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From what I can tell, their evolution is happiness-based. Depending on your training regimen and the way you treat it, it could take place at level 10 or level 50. Leviathan evolved after approximatively two months; I've found that massaging her softly after training made her reliably happy.