Nice game, very nice slightly pixelated style, the AI of the enemies is good and in general the game is very well made. However, I cannot but mention the following problems:
1) The waiting time when playing in the browser is extremely long, about 1-2 minutes if you have 3MB/s internet (my internet is 3MB/s because I use mobile data to see how fast the game would load from the phone)
2) The attack speed is very slow (I don't know if this is done on purpose so that the attack speed can be improved later or if the animation itself is slow).
3) I would have liked to have the possibility to choose at least between difficulties (on "Easy" the game restores a life point every minute and on "Normal" the game remains as it is now).