Grapple Climber

Use your mouse to grapple onto nodes. Use momentum to fling yourself higher. 

If you go below the screen of left/right of the screen, you lose.

When off screen, you will not lose, IF you are either still attached to a node, or heading back towards the screen.

When you first grapple onto a node, your velocity is multiplied by x1.2 to give a little extra boost. Use that to fling yourself higher.