I'm not sure the contract is even legal. In the EU "moral rights" cannot be signed away, and in many EU countries they cannot even be waived. From what I understand, in Sweden they can only be waived in limited, specific ways, and the contract Julian posted demands he waive everything he can.

Whether it's legal or not it's extremely dodgy. It's pretty much a demand of unconditional surrender. And we know C418 got better terms than these, since he retains copyright to his music.