The main bugginess/error was supposed to be the story, kinda when a simulation goes wrong/corrupt, but it didn't quite turn out in the way I intended, in the github of this project, there is a txt file explaining more in detail what've wanted with this project. And I agree that the story is very silly, It is just the first things that came to my mind, though the overall original idea is still there, the princess is very tsundere, then she likes you more, then at the end she loves you, then it was supposed to have some creepy/horror stuff. The main thing that I am disappointed is that I couldn't create good enough music for this project, as I feel it would've made the story better, as off now, it is pretty garbage lul.
The other bug, that happened hours before the deadline, is that if you earn stamina or health, and you are at fullhealth or close, you stamina/health gets increased as well, so you could stuff yourself with all the potions in your inventory and you have 300hp by the first enemy.
The game quitting when you die is ""intended" as I didn't really wanted to make an death screen, as didn't had time to do it and test it, will do it in post jam update.
And I agree, the combat is something to be improved, now you just fireball and win, add maybe some new items and descriptions, to see if things work well.
For a postjam, I will try to focus more on the story, to make it hit an creepy vibe at the end, then improve the combat, but nothing really major :D