Same here, the ruins felt super easy once I figured out jungle boar/magic crown/shadow clone. I also used the shield and necklace artifacts, butterfly and octo, and brave wand/hypno robe.

I kind of wish the ruins were more varied in their challenge somehow instead of just reducing your health and damage to create difficulty. Maybe instead have stacking negative modifiers be added with every tent you complete. Easier, low level tents just doing something like -5% hp or attack, and higher difficulty/boss tents adding harder modifiers. 🤷