Good concept, but there's room for improvement
I like the idea, but some things make it much less enjoyable than it could be.
For one thing, setting the quality lower doesn't make it much faster for those who doesn't have a top notch computer.
Second, when first playing it isn't obvious what you should do in some cases, like at first I didn't even notice the tree branch that I needed to avoid, or didn't know what to do with the warrior with the shield at first, so a few deaths at the start is pretty much inevitable.
And then there's the block and dodge moves; would make more sense imo if the character would keep doing these moves until you release the buttons, not just doing it for 1 second when pressing the button. When I was warned for arrows approaching, I pressed block, she blocked for a second, then before I could have pressed the button again, the arrows killed me...Then there was an obstacle in level 3 that I couldn't pass, the long whatever thing I should be going under but I can't since the character doesn't stay down for long enough to get through, so I always died at that obstacle.
All these together make the player get frustrated pretty soon.