Why i can’t claim all achievement reward? Except main story.
Yoy need to complete the challenge
All floors? Wtf T_T
Yes, uae this guide its help
The achievements for beating events are meant to be something you work towards over time. After a good few months playing the game you should start to beat some of them. Dungeon Challenge is actually the hardest event to go the full way, with the final 10 floors being ridiculous. You won’t beat it for a long time!