Does anyone have any tips because I'm so bad I can't make it past Deep Cave :(
Best tip I could give you is that you have to make sure you have a key in the crypt finale boss room and open the locked door after killing the boss. It will help you skip deep cave and let you go to enchanted swamp. I hope this message helps.
(after you open the door go to the exit behind the open door.)
Enchanted swamp is veeeeeery veeery bad against thorns builds and sustain builds. In my 200+ floor I went there once and almost killed my run, because the boss was hit by a single hit of my multi hit chain, while he summons 3 minions every turn.
IMPOSSIBLE to deal with with many many builds, other path is much more straight forward in general.
Just try around with items and see if you might just overlook a good common item. The strenght of an item does not just come from raw stats, but also the space they are using. For example, the club is extremely good since it has -1 weakness against multihits, does same damage as wooden sword and frees one space.
Consumes are also great just to make the floors easier. 12 dmg to all, 6 poison, all the extra turns. This makes it possible to easily farm the floor usually to get a better powerspike for the next floor.
Reorganizing regulary for optimise item synergies and taking temporary items like machete, even if you throw it away next round, can greatly change how well you are doing, especially early game.