Oh, that's good! Although it's unbelievable that videos are always made about the simplest games, it's great that you did it.
Let's say I don't understand German, but sometimes I knew what you were saying. :)
You can shoot through the wall so you can't hide. And the goal is to collect 20 objects on the 9 rooms, which is not random, just the placement of the object after picking it up.
I also put your video on the game's official page on wls.hu (https://wls.hu/rip/). Thank you!