Almost there

I've made it to stage 15-4. I think I can clear stage 15 if I do one more Tykue quest. When the cats' movements get sluggish, I repeat the enhance reincarnation. Tap the mine, and when entering or collecting diamonds, watch ads to gather as many diamonds as possible, then do weapon gacha. Weapons can be powered up by merging them. There are also ads during the stage that give you 3x boosts, but the effect wears off in a few minutes. So, if you want to watch the minimum number of ads, just watch the first and last ad in the mine twice, power up your weapon gacha, and do the free enhance reincarnation daily. This should make it easier to clear hidden quests within the time limit.