You might be able to bomb around the cursed rooms if you have enough bombs. Sometimes you can go into rooms not charted on the map through walls that look solid. It's tedious and risky though.
I'll look into the amulet thing. There should be 2 out of 6 that are always good.
You can email email@example.com if you want to give detailed feedback. Either way, I appreciate all feedback, detailed or not.