Nice idea ! I think it could be made a little more enjoyable with this two changes :

• making Alice move smoothy on the left/right rather than jerkily.
• less difficulty (more time between each obstacle) at least at the beginning

First of all, because im a fan of settings on a system, the options menu of the game looks very awful, on godot you could scale the text like you did on the text of the buttons. I think the aspect of the UI is affected by the resolution that you choose of the game, you could stick to a lower resolution like 160 x 144, by doing this the scale of the godot UI design by default would not be a problem.

Speaking of resolution, if your game is for browsers, the setting for choosing a resolution doesnt have any effect, so it will be better if is not visible, because it doesnt do anything. And about the volume settings section, well, i doesnt work very well, when you enter settings the slider should have the current value of the volume db from the channel that is controlled by the slider, and when you change its value it should be reflected on the volume db.

For the visuals, well, they could improved by not changing the style like you did with the walls and the interactive objects sprites, like alice or the barriers. Because, I couldnt tell what was happening at my first five deaths, it was because the grey objects were camouflaging with the grey background. 

Like i said so, the game would benefit from a reduction of the resolution, you could maintain it by changing the scale option to Viewport. Because the idea of the game is solid, you completed it and it is playable, well, to a certain point because after a time the game is freezing I dont know why. But, overall, you made a game and i aprecciate it, the dudes that are rating without commenting are not worthy of your vydia, they do not love games.