Nice looking game, but there is just too much scrolling for me. It is hard to see what is exacly happening. The lvl up heals were a little confusing at first, as I didn't know why my helth is jumping up.
I found 2 damage prevention perks, did like 5 upgrades to my health, and it was enough to beat the game with the lvl ups. I just won while trying to read through the perks.