Generally great game so far, but I have feedback on the LLENN episode:
I don't know how much work the extra UI options and save states would take, but LLENN's episode has a disproportional amount of play time between chapters and mid-play-session save stats compared to the previous episodes. For example, in other episodes the "facility maze" portion would have been chapter 2, but when I quit after reaching the "obvious checkpoint" I found out that it was still chapter 1. I don't know how many chapters you would need to divide it into to get it "balanced" (I haven't completed the facility maze yet) but I highly advise making the additional divisions so that players can reasonably jump to at least the vicinity of the scene they want.
Related to me not completing the facility maze, the design of the maze has a huge chokepoint in the middle of the map, such that by the end it requires an inordinate amount of RNG (typically acquired by waiting in a nearby hiding spot for excessive lengths of time) to get through without being automatically caught, let alone without being spotted. In addition, the laser minigame's timer is too short for the combination of length you have to travel and being sent back to the start if you get hit - I got hit on the first laser due to misunderstanding the hitboxes, then ran out of time before reaching the chest despite no further mistakes and a good pace. On top of all that, getting the four other keys was about 45-60 minutes of gameplay (my routing had key #3 being the claw machine since I hadn't realized the implications of the layout, and I needed to get back through the chokepoint to get the third "unguarded chest" key then back through the chokepoint AGAIN to reach the laser room). Despite this time commitment, after failing the laser room once and being unable to get through the chokepoint without being caught a couple more times, I fully failed the stage and got set back to zero keys which did not feel good, especially knowing that if I walked away and came back later I would also need to do the initial scene to get back to this stage.
To address that portion in particular, I would advise altering two things: the laser room with the goal of allowing at least one mistake, and adding at least one alternate path to each of the east and north wings to eliminate the chokepoint RNG check. I believe that the facility maze's time to complete will become reasonable enough for the full reset on full fail to be okay if you don't spend half your time trying to find an opening to get through a single cramped intersection.
Edit: typo
