My thoughts while playing the game: "Uh, that looks nice!", "Did a helicopter that chased me just exploded? Cool!", "Hm, why do I smash into the same wall all the time?"
The first impression was great. The game looks awesome and sound pretty good. First I did not understand the controls, seems like you have to click the action button at least once after each death before space works again (I assume the Unity button loses focus?).
The first couple of minutes it was quite entertaining but then I stumbled upon an action sequence that always killed me. I probably missed something. So I can't say if the gameplay will change later on but I found it a bit flat because there is nothing for me to choose to do. I think it would work better if you could just jump anytime and maybe slide too. Just like in Canabalt.
Don't take this the wrong way, it's really cool what you did and very promising. I'll add it to my collection and keep an eye out for updates.