Congrats on finishing your game!
Your pixel art style is fantastic. You nailed that retro art style. Well done. And I really like the core concept of needing to defeat enemies with those random rolls.
I think the whole process of acquiring dice in chests, then opening your inventory, and rolling them, and equipping them, and then throwing them was just a bit much. Especially if you end up dying and need to restart and redo everything. It just got very tedious. I think you could have easily started with the dice rolled and in the inventory with Z to cycle through them and X to throw. That'd streamline the whole experience and save you a bunch of development time. All those extra steps are just a chore to get to the meat of your game which is solving the levels, right?
You've got a neat little game on your hands. Anything taking inspiration from Kirby is going to be charming and enjoyable, but make sure to playtest and find the fun so you can share that experience with your players.
Good job on making your game in 48 hours. Keep making games!