I think the game had a fun mechanic and cool design! Some nice "easy puzzles" as well, I liked the retro feeling it gave.
Some feedback would be the Fuel gauge and HP is very hard to find, since they kind of melt in with the platforms. So maybe have like a darker background underneath them or something.
Also I think a tutorial level would be great for this kind of game, since I was wondering for a second why isn't the switching working, but I was standing on the red blocks, which I read afterwards from the description that it's not working there!
Great game though for a weeks work! :)