You have fallen, oh so very far - 99 floor underground kind of far. That's OK though, because you are
persistent and careful, the exact traits that you'll need for you to get back up to gound zero. Here's
what you need to know:
The ladder behind the locked gate is the key to go back up. In order to unlock the gate though, you have to
step on all the trigger tiles once and only once.
You can move one tile at a time and move using the physical/virtual arrow keys or click/press on the
tiles. Ready?
You did it! Reaching ground zero was tough, but you pulled through. Now, let's see how high up you can reach!