By now my character lvls are 16 and the job lvl at 25. But my lvl was a bit lower at the first stages of the event
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Took your advice and used a gem on stage 6. At first i was sceptical because the mobs at stage 7 were lvl 40 and one of my chars already died before the boss. But then the boss came and he was lvl 16. lol. Doesn't rly make sense that he has suddendly such a low lvl but oh well, I'll take it :P