You should include more skills, and allow the player to level up. Add better music and improve the graphics. There should be more to fight than just rats.

Its not very good when youve play a few min you should add differ enemys and weapons so this
game can be more difficult(and FUN!).

well...not much progression through the game and needs more (and better) enimies

It could be good if :
- it was less difficult ( one battle put you to 20hp or less )
- you could evolved ( gain xp => up levels )
- more monsters ( only one )
- you could buy other things than potions at the shop ( weapons, shields etc .. )
- others class ( wizard, archer etc .. )

Keep continue ;)

Its only fight with rats, and also i dont see nothing funny