The goal is to collect the glass stones/crystals. You must destroy them. This will release artifacts that your companions can collect. Once all companions possess an artifact, the mothership will appear and provide you with two more companions.
There is no final goal. The game is endless. However, after 20 artifacts, it becomes very difficult to find one for each companion, as you have to travel long distances and the risk of falling off the world is high.
Just before uploading, I increased the jump power by another 15%. That might have been a mistake. I wanted to make it a bit easier in case a mountain that was too high was generated.
Thanks for testing.