If you consider yourself a beta tester, please try this:
Buy two weapon slot unlocks. Take 4 weapons of different types and star levels -- things that you would not normally take. Go down starting from depth 1, and report problems.
I took some 1 star and 2 star swords down into firefly. The 1 star equipment did more damage than the 2 star.
I can't test all the equipment, or all the depths, but I think something is wrong.
Listing the actual equipment you are testing would also be helpful.