Out of nowhere the Demogorgon attacked me lol. I just think the platforms could be a different color instead of white, since they stand out a bit too much and kind of break the scenery in a bad way.

I liked the game but honestly you need to work more on the animation, best wishes.

It's even funny) the only downside is that it's not very clear how the player attacks

Well done on submitting a game! I eventually figured out how to double jump and get to the alien area. It seems the weapon fires when you release the mouse button, rather than when you click it? And maybe there is some kind of cooldown so you can't shoot sometimes? Either way I did try to go up to the aliens and shoot but wasn't sure if it was doing anything. Maybe they just require a lot of hits.