Thank you :)
Your comment is really nice! I'm not really proud of this game because of the pixel art, I learn pixel art right now. Actually, I've only been making games for 4 months. But anyway, I enjoyed doing this game! You're right, the gameplay is a bit tough but I didn't want to have too easy game, it's a nightmare :). I take your observation about health tool into consideration, I'll make some update this way...