Hello. Yes, the combat need more balance. I had to tweak them in a rush near the deadline, so I decided to make them more easy to kill. But with the 3 knights they become extremely easy.
About the dragon... I forgot to rise his HP... it was in test mode, but in the rush of making a "descent" level (in 15 minutes, 40 before the jam's deadline), and make everything works together, I forgot to rise it from the 50 points it has. And the idle animation between the attacks is long, cause I had planed a different combat, more fun and engaging in my head when i did the animations, but run out of time to implement it. So both things together make the dragon a disappointment for some, myself included.
I'm planing to update the game when i have sometime after the jam, with my original GDD, which will be much more fun than this version.
Thank you for your feedback. Nice playing your game too!