Normal instructions are in game so basically I made so you can't die if you fall into the void and so you need to get to the end and grapple onto the bottom of the platform at the end (I made it easier to get to the end). Then press space (it'll make you die) and your grapple will still be attached to the platform at the and then jump off and you will be transported to the end :)
@epninja for most of the code and @adimanu20 (me) for changing things up a bit.
