Loved the atmosphere! The ambient music, the amazing visuals, the lighting... everything is extremely well polished!
I really loved how the moving dragon actually contributes to gathering the crystals itself! Really clever design.
I am a bit bad at playing... Upon my death everything resets which was a bit punishing for me. I will have to edit my game right now, but I will revisit and try to finish it! Maybe a small change for a player as bad as me could be keeping the crystals stored at the door upon my death haha.
Great job!