Thanks for your review!
We'll see what we can do about the wall jumping to make it easier. Unfortunately wall climbing isn't going to be a viable option; Wall jumping allows for the user to skillfully navigate the app, which creates a huge dynamic for the game.
Multiplayer will be introduced if the game's audience keeps growing as it is.
We're glad that you're enjoying the game! :D We will be releasing a mobile version of this shortly for iOS devices and possibly android.