This is great! I can tell you really put a ton of work into this. I can see a lot of potential here. All the sword sprites and magic effects are beautiful and it's really fun collecting them all. I can see myself having this up all day on another monitor.
I think there might need to be a little more clarity with what the sword are doing in combat. I think some floating damage numbers would be a great addition. It's also not super clear what all the different status effects do, but I know all that can be made clear eventually.
For the UI, it feels like just a smidge too much clicking around between rounds. I think some of the UI might be able to be combined. Like, you could probably combine the quest board and battle button. Just maybe include a battle button at the bottom of that screen, or even just go straight into battle when you accept a quest. I also feel like the smith and army screen could be one screen. You could default to the army screen and just have a little smithy button in the bottom corner of each sword panel to bring up the upgrade screen for it.
I really like this one, well done!