Simple... And Dull
All you do in this is run and slash. Sadly, there is a lot more running than slashing. With the only healing point at the very start, you will be spending nearly all your time in this app running.
The stats are pointless, as there is no way to upgrade yourself in any way. There are no penalties for running away, and you will have to just to get through. And when you finally get to the end, you just see a girl standing there, and are immediately sent back to start, score wiped clean with no reason to go through it again.
It works well, but is boring and tedious. There are better ways to spend your time. Stay away.