It's a nice game, but there's not a lot to do '^'
You can win by just spamming Attack, then Heal to full health, then spam Attack etc.
The skills don't happen often enough to be viable, unfortunately.
Maybe if the healing items were limited, that would encourage player to try out their luck on the skills?
On the bright side: the game is very easy to understand, even without the tutorial.
Overall, a good idea, lacks a bit in content and execution, but still, good job! =)