Hello,
Thanks for your feedback, Balancing the game was really hard but you are right, the game is too easy, I was afraid many players would give up if they died 2 times on the first boss, I underestimated players I guess, I've been working to expand this game for the last week, things are going well and I will probably release it as the 3th idle delver sometime soon, I will make sure it's harder to complete!
Thanks again for your feedback, I really appreciate it! :)