Logic Masters Deutschland e.V.

Last month I have attended a city wide puzzling event, Karsruher Kombilösen, hosted by Christian and his friend group. It was a very fun experience and the puzzles presented were more mystery/logic puzzle style. I have noticed that such puzzles are on very short supply in the puzzle portal recently, so I came up with one of my own during a long flight.
During the event you are given an instruction booklet which contains lots of useful information. You can download this instruction booklet (or Infoheft, in german) under this link. It is in German, however German knowledge isn't required to solve the puzzle, which is a hint in itself about which parts of the booklet may come in handy ;)

Without further due, here is the puzzle. Everything below is part of the puzzle presentation:

The parody puzzling magazine 5S1N (which derived its name from a combination of the questioning method 5W1H and how we get 5 Sudokus published for every 1 Non-Sudoku these days) is once again poking the sleeping bear with their latest article, which emphasizes how even individual Sudoku variants get more solves than certain popular puzzling genres:

In our latest survey we have once again uncovered some surprising results on which puzzle genres are fan favorites based on their monthly solve count. The Sudoku domination of the recent times may be concerning, but was predictable, as one survey participant stated: "We have been seeing this trend since the pandemic times, anyone could have seen these results coming from a mile away." Here are the results (all values given in solves per month):

Tapa: 84 -------------- Nurikabe: 66
Skyscrapers: 80 ---- Kurotto: 85
Cave: 86 ------------- Coral: 65
Yajilin: 74 ------------ Slitherlink: 84
Aqre: 81 -------------- Pentominous: 77
Hashi: 65 ------------- Japanese Sums: 78

The sudoku variants were analyzed in their own sub category, and their results came up as follows:

XV Pairs: 88 ----------- Quadruples: 80
Sandwich: 67 --------- Disjoint Groups: 84
Kropki Pairs: 79 ------ Palindrome: 82
Zipper Line: 90 ------- Numbered Rooms: 68
Arrow: 87 -------------- Killer: 82
Thermometer: 72 ----- Lockout Line: 85