The game is good, I liked the look, atmosphere and story. I would suggest in case a button to skip the dialogue if I already saw it before after I died.
What I mean is like if you press X or click it shows all the current dialogue immediately and ends the typing effect. Then pressing it one more time after that either goes to the next dialogue, or if there's no more, returns to the game immediately, something like that. In case I pressed the wrong button or may have missed it let me know. In case I may have missed it, I don't consider this specific part at all for now in my rating.
Also I think the loading of pieces of level like when you go down, I think it does that when it is lagging for a split second there (I am guessing). From my understanding on it as a total beginner, I think it's extremely difficult to do this from what I read, and I think it's very hard for many professionals including even professional teams to do this too, and to do it well.
The fact that you even attempted to touch this at all is in my opinion very ambitious by itself - very great job and very great game!