Hey I went ahead and checked out your game. Looks pretty good for only a half hour of work. This game shows how adding just a few sound effects can really enhance a game. My personal preference would be a link to the github repo, rather than a zipfile, but that's just my personal preference. When I extracted the .zip file, I got a ton of extra files and git garbldeegoop. Maybe I did something wrong when I was extracting it, but at any rate I was able to find a link to the github repo and clone from there.
In order for it to work on Linux I had to fix one case-sensitivity issue: "Player.png" in the code, versus "player.png" in the data file.
It probably would be a good idea to identify the controls in the readme. Something like "CONTROLS: A, D, Spacebar, MouseClick" would be sufficient.
Nice work. I will look forward to seeing your next project, or version 2.0 of EinSpielWoManRumläuftUndKnöpfeDrückt. You might also consider a shorter title, such as "TrashGame" (not sure how to say that in German), making it easier to get in and out of the folder from command line / terminal.