Yeah, my time ran extremely short, There was a lot I still needed to do and sadly, couldn't.
At some point during the development, I wanted to allow the player to "break" the combo breaking, but due to many issues I had with the code, it was a bit more complicated than planned(cause I had to add a delay to prevent the buttons to decay while you were on cooldown); so I left it for later and didn't rework on it. Wanted it to be punitive though, but it's true that it's a bit too easy to lose it. Unfortunately, tweaking the difficulty was something I planned to do after play testing, but I didn't have the chance to.
If you find the battle system interesting, I've been looking at it for so much and been changing it a lot. I kinda like how it works right now, aside a few things to fix. Think it could be good for an actual game? Cause I've been thinking about making a game out of this system (of course, tweaking it a bit; each monsters would have their specific patterns too)