This game is broken, because it's using an old version of construct2.

My console fix involves:

AudioBufferSourceNode.prototype.noteOn=function(){}
AudioBufferSourceNode.prototype.noteOff=function(){}
AudioBufferSourceNode.prototype.gain={}
this.ga.noteOn=function(){}
this.ga.noteOff=function(){}
this.ga.gain={}

and it has to be set at certain breakpoint.

As for the game itself, I'm noticing a slight difficulty in climbing, as if the double jump is activating as the first jump - almost as if there's not enough "coyote time".

The first but unfortunately failed game in the then new HTML5 platform at Newgrounds in 2012!

Buttons don't work.

Doesn't start. When you fix the buttons, I'll put a real review.

I booted the game and was greeted to THE coolest user loader screen in my experience with C2 game apps... That being said, as soon as I got to the start screen I ran into an issue: How do I start the game? I clicked on the tab but the game wouldn't start. Am I suppose to press a key? I don't see the instructions in the description.