this is really cool and im enjoying it immensely, but i have quite a few complaints as well. (they're in order of how i encountered them, so bear with me if this is a little disorganized)
1. you've gotta add a button to accelerate the cut scenes and text... it takes way too long and i had to refresh the page more than once due to my sound card issues (which made me have to replay the intro over and over again). also, you could think about having the text pop up in the background while still allowing the player to move. it's very tedious to scroll through this stuff when most of the puzzles are relatively self explanatory.
2. saves didnt seem to work at all, and the menu controls were really weird/ it was far too easy to accidentally select the wrong file even if they did actually load properly.
3. a sprint button would be really nice. walk speed is far too slow in general given that there isnt much to look at besides specific objects and single frame animations (which are cool, but the lack of animations otherwise doesnt justify the slow move speed) and its ridiculous that you'd slow the move speed even further for certain sequences. that's like running dwarf fortress at 1/4 speed... its pointless because the whole game is about the actors and how they interact, not making the player stare at them for extended lengths of time. past this, these slowed down sequences come right before a difficult battle like 100% of the time, making them much more likely to be repeated multiple times and making them dozens of times more irritating as a result.
4. z, x, and spacebar are not really the best places to put the controls. i cant figure out which fingers to put where, man. think about changing spacebar to c, at least.
transition from top down to platformer was a bit weird. i like that a lot of games have been doing this, but it needs some kind of an explanation (magic gemstone or something... this is a fantasy game so it shouldnt be hard to fabricate a plot device or a flash of light or something)
5. again, the text really gets in the way of the game. during the boss battle with the spider everything feels incredibly choppy because of how rapidly the game switches between the animations and the gameplay, as well as the fact that i shouldnt have to wait 5 seconds after every attack on the boss to read text that wouldnt take a second. yes, it's good for atmosphere and i like the script, but it's poorly executed and makes the battle frustrating. there are just altogether too many instances where the player is frozen or slowed down for no good reason while the game continues to progress around you. it'd be one thing if i had to get my blade unstuck from the webbing each time i attack, but instead it seems to be just an arbitrary waiting period. if you give the player something to do here, this wouldnt be so aggravating, but leaving me to sit on top of the spider for no reason while enemies advance is simply not skill based difficulty and isnt entertaining or challenging in any real way.
6. climbing ladders was a bit weird and i felt like the jump should have been a separate keystroke than just holding up at the top. it worked and all but it was sort of strange.
7. the moving torch or brazier or whatever that was repeatedly got stuck on the black structure in the forest, and i had to keep leaving the area and coming back to retrieve it. you should add a small buffer area that can be walked on but that the torches cant enter, much like most sliding block puzzles (see top down zelda games)
8. i know you mentioned that the 2nd boss is too hard, but wow, man.... that is just not fun. you should at least give the player a few life points as a cushion (like 3 hearts or whatever?) i feel like we all need a little bit of time to learn how to deal with the ghost's movement patterns, and i dont even feel like you need to nerf the boss much if you did this.
ill message with more later