Nice art. I really like the mood of the game. I didn't really understand what the attack on the left click did because, for me, it looked like I was attacking myself and it did nothing. So I beat the game the first time without using the attack. I understood later, but it wasn't obvious to me at first. Also, I was stuck on the password for a while. Since uppercase and lowercase letters are not very different with the font you use, I didn't think it would be case-sensitive.
It was a very short game, but still pretty nice. Well done!