Thank you for your kind words :)
Yeah we did play around with the gravity and jump mechanics, but everything we tried felt very off. We still aren't too happy with the mechanics we implemented eventually, so we'll definitely try to fix it later on.
I've never played Astrobot, but I've wanted to make a 2D platformer for a long time. We will definitely continue work on this project, only problem is our school holiday is over now, so we won't be able to work on it until December :(