Solid idea for an endless runner, what with the energy management to be able to continue running. The levels do get boring rather quickly however. Some extra obstacles other than bottomless pits would be nice. And of course my first thought when I saw "wizard" was "add monsters!" but I doubt that's what you wanted your game to be, so terrain hazards should suffice.
Also, I noticed something that may be a bug. Whenever I passed 800 meters, the energy refill stations were always at the beginning of the platform, making it difficult to progress further. Do note that I didn't pass 1100 meters so I don't know if this extends for the rest of the game.
You've definitely got a solid start going for you!.