The Slay! is a Fanzine made by fans and community members and uses content of a lot of creators under
CC BY-SA 3.0. Therefore it is not officially supported by publisher Uhrwerk and I am not aware that any efforts have been taken to translate them into other languages. But you are free to download them in German, translate it with any software you like and ask questions here, if something appears to be strange to you. Our Community tends to help out quite quickly.
Regarding adventures: Official content is provided by Uhrwerk. If there is no translation of anything, there is only little chance it exists, unfortunatly. But you can have a look at our
Slayers Pit. In the Download Section you can choose english as a filter option. It contains a couple of translated things you might like.