Que juegazo man jajajaja ojala te contrate la Nasa

Well done on your game.
But here are somethings that I found that bothered me, I hope you work on them to make this game better and find it Rewarding !
But remember 'A' for effort !

The beginning of the game had elements where bats flew at a much higher altitude that could not be reached, so to me that felt like unwanted effort but one or two came straight towards you.

You could maybe lower their altitudes so that you can have something to attack.
Here's the link as to what I mean.

https://drive.google.com/file/d/1DL5B5OpMi3RZ0d1FOBtF6DQsNz72L2mQ/view?usp=sharing

After going through the first door, the music turned spooky as hell!
I think you need to find something else for that room replacing that spooky music a little less spookier maybe :) (a little late for Halloween aren't we? xD).
Also I noticed that were some platforms where you climbed a ladder to reach and jumped , but also that had no reward meaning you wasted extra time on something that gives the player nothing. So I suggest you add in a lamp stand there or something that gave you hearts or collectible.

https://drive.google.com/file/d/1I2jqsIJQC8qC5wWAjMEAGyVhi5AzqpbE/view?usp=sharing

I also think you need to redo the colors on Simon because his clothes are the same as the walls in that region.
Also the pixels art was really amazing I really appreciate the amount of effort put into the visuals.
It could have been a little better if you could make an animation for climbing ladders too wouldn't it ?

So the next door, you land on a platform and a swarm of bats head towards you and you either dodge them/ attack them or just hit.
Then you wait for a moving platform to reach you and you land the jump, but unfortunately you don't seem to move along the plane but you fall of as it moves away from you.Meaning it does not seem to carry you over.

If you are not sure as to how to fix it I suggest you close the gap by adding in more standing planes so you could make the jumps than take that moving plane. Just my suggestion :)
also this game needs some kind of check point because the boss in the 3rd door seems hard!

So this is all that I could find out until the big bat(Boss?) But there's more to this game.
Can't wait to play more.
Good Luck further !