Fun game with a nice gameplay loop. Honestly, the art style that you picked arousing from the troubles you've faced during the development really suits the fun little story. Good game.
I actually really enjoyed the new last round. Unexpected new mechanic that really fits. Also the UI for jump exhaustion was a good touch, but it's the only thing that stands out from the usual hand drawn style the game has. Maybe something like blinking sweat droplets on the hero that last the duration of exhaustion would work better.
Also I think the mechanic that you have for the dragon when running away and it popping up could be used in the final battle, for a little bit more challenging and climactic final fight. Fun game and a good update!