I liked a lot about this game, but ran into a few bugs that really hurt the experience. I'm on Windows 10, not sure if that has anything to do with it. I haven't finished it yet but I will consider getting back to it later.
I liked the option to switch the palette in the menu. I don't like the gameboy-style palettes, so it was very nice to see. The graphics were pretty good all around. I also liked the fade effect in the menu.
The conveyors were buggy. If you get on at a certain point (too far to one of the sides I think) you moved very slowly and then fell off when reaching the end. There is also a glitch where the level flickers between 1 and 2. I had it constantly while playing.
The most major glitch was that you can freeze the game when saving. If you press the confirm button too early, the game freezes and doesn't accept any input. It's not the application that's frozen, you can still close it normally, but you have to shut down the game. It was a real downer to lose my progress because of that. There was some unpredicatable behavior at other times with the dialog too. If you clicked too early at other times it would restart the dialog. I suggest letting the player advance the dialog more quickly with the confirm button since so many games do that & people are used to it.
There were also a couple design things I didn't like. There's at least one part where you can go up into the next screen and immediately hit an enemy that you couldn't see. Also, it was too easy to fall off a cliff. Just walking next to a cliff would lead to accidental falls since the tolerance was so low.
Hopefully you can figure out how to fix the save glitch because it's a big problem, but nothing else was really that much of a problem.