Sharing some tips I've learned. I'm stopping at level 13~

I think I've done enough. I played without doing treasure quests/hidden quests, just by watching ads out of curiosity. If there's a cathedral level requirement for hidden quests, I'll share the tips I learned while playing. ★ Upgrading various buildings is not required for Cathedral leveling. Initially, Cathedral leveling seems to require various things like having a farm or specific buildings, but around level 7-8, the requirements become almost identical. It changes to upgrading things like the Guild Operations Center, Hospital, and Research Lab. So... do you need to upgrade other buildings to upgrade the Guild Operations Center, Hospital, or Research Lab? Yes... you don't need to. Only the Cathedral level and resources are required. Therefore, if you need to level up the Cathedral quickly, don't build everything they tell you to. ★ Join a guild quickly and keep resource chests. Once you pass level 10, your shield will drop and you'll be attacked. Keep them as chests to reduce damage from raids.