Thank you so much for taking the time to play the game and leave such detailed feedback!
The game is definitely longer than I thought it would be. I have no experience with dungeon crawlers, but the genre made sure going through the dungeon was not as fast as I initially thought. In my personal tests I can finish the entire main game in a bit over 9 hours, but without knowing exactly what to do I can see this time going over 12 hours very easily.
The first floor of the Catacombs is mainly so the player can reach level 2 before having to deal with enemy team composition and get used to the exploration/combat in the process, but the comment about money seems very sensible to me. I think at the very least, I should be able to give a 50% buff of money to most enemies without breaking to much of the money management part of the game (you are not supposed to have everything, but rather pick and choose what do you feel it is of more importance in the moment). More item crates also don't seem like a bad idea. It felt not so different from the rate I found items in the earlier SMT games, but I did not get much feedback outside of close friends, so a non-biased opinion in the matter feels very nice.
When you download the game, there was already a warning with a link to an official way of getting the RTP, but some of my friends also did not notice the warning, so it looks like a good idea to add a warning somewhere more visible.
The lack of the Diary functionalities before you defeat Princess Pygmy is a known bug, the latest release version still has it, but it’s one of the things I recently fixed.
One-way doors are either a way to separate bigger sections within a floor or a straight up hazard on later dungeons, but the first dungeon is the first dungeon, I did not have any experience drawing floors yet. Thank you for the opinion, I will go back to the first dungeons and change the more unnecessary/mean one-way doors.
Again, thank you so much for the comments! It’s going to help me a lot!