2. OK, I think you are right. Maybe a mario-like design is not so fit with the games today then :/
I like the old school control, but maybe most of the people don't.
I will think about it, tThanks.
(I do play Rogue Legacy before, but I never got time to play Celeste since I buy it btw :P)
4. I don't know why you think there is any "pixel/frame-perfect jumps" in Stage 1.
I mean yes, there is a "hard way" that require pixel-perfect jumps in S1, but that is not the normal way to pass this stage.
Some places in the game can be reach by certain way easily , like move straight without jumping or press buttons.
I think maybe I design this stage too hard so most of the people don't realize there is another way to pass this stage.
(And which is my fault indeed.)
But I have tried play this game with my friend a lot of time, and I can confirm there is not many "pixel/frame-perfect jumps" in this game.
I highly recommend to watch the walk-through video below, and find out the normal way to complete Stage 1 . If you think there is any "pixel/frame-perfect jumps" in it, then I have really nothing to say :/
Anyway, thanks for your advice. I will think about it when I make next game, especially about player control, thanks.