Why would you require us to repeat the action multiple of times but we don't even know if it is enough, I didn't even pass through the first door, hate this shit
You don't "have" to repeat any action during the first Trial, if that's what you are talking about. Any door can be opened first try if your build suits that. Brute-forsing the door is specifically there so you would *not* get soft-locked by chance
You'll need study or magic stats to complete this trial whether the study one or magic stat should be 70+ and you'll have to choose the way according to it too.