I got killed as soon as I started the game by a knight that spawned next to me. Played a few more times, killed a few knights with rocks (they don't exactly chase after you, so I couldn't really bait them) but burned most of them... And I got crushed by a rock that generated above me. Map generation may need some tweaks. Maybe a safe 3x3 area at your spawn location?
Presentation wise, not bad. Graphics are clean (my only issue is with the knights' walking animation), and that funny little animation with the dragon digging across the screen was, well... funny. Music is also good but the sound effects don't really feel all too gameboy-ish. Overall a pretty solid entry but I kinda sucked at it. Maybe I need to play more dig-dug