I'm gonna yap a lot about onboarding and UI here because there's stuff to talk about. I'm not even part of the jam, but if there's a game that I spot that cloud be improved massively, I will try to help out.
1. Remove all of the "dev messages". Why add multiple difficulties if the intended one is the hardest? I feel like that should be in reverse: intended one is the easiest or medium, so anyone can experience the full game, and then if someone wants to challenge themselves with a second playthrough, they can up the difficulty.
2. The tutorial is fine, but it shouldn't be text based. A much better way to create tutorials is to teach the player one step at a time. Here, you put a text wall explaining the whole thing, which should be separated into 3 steps instead.
3. The UX design in the fights is unintuitive. If the player doesn't have any more moves left, the game should automatically detect that and move onto the next turn.
4. The enemy's turn is unnecessarily slow.
5. Hitmarkers for damage, healing and shield would REALLY be appreciated. Oftentimes I cannot tell what's happening at all, especially during the enemy attacks, where I get no information about what they are actually doing.
6. The fight options/abilities of your cards should be greyed out when they aren't selectable yet. Or in reverse: the abilities should light up when you click on one of your cards.
7. During fights: abilities that don't require targeting should immediately activate when clicking. This was especially confusing when the ability said heal all allies or whatever and I had to click the enemy.
8. Deselecting an ability should be bound to RMB.
9. Either I was doing something wrong or sometimes my abilities did 0 damage, or half of it.
10. This might be too early to say, but what's the point of attacking multiple times in one ability? So far I haven't seen a single synergy that would make multi-attacks more beneficial than single attacks. It doesn't seem to proc through revive enemies either from what I've seen?
11. In fact, there aren't even any synergies in the game at all! There are 3 stats, damage, shield and HP, but no synergies or status effects or buffs...
12. Some of the enemies just do counter attacks but this is not explained or listed anywhere? Hard to tell how much they damage again because of the lack of hitmarkers.
I did 4/5 fights in total before losing interest. The main issue is the lack of synergies and player feedback (as in UI/UX).
A lot of what I said is probably caused by lack of time or engine limitations. If it's the latter, you should consider switching to something more powerful like Godot or Unity because the game would be a lot better otherwise.