Thanks for the comments. I'm glad you liked my "trick" mechanic.
Ok, so the car mechanic is in fact very hard as you have to nail it on the one frame, and this was my first platformer and I didn't really have time to figure out the jump buffer. I appreciate the advice. I will look into it. What I did do was place the cars in the first two levels so that if you jump at their rear bumper, your jump will be perfectly timed every time. In level 1 it's the fastest way to collect the candy. In level 2 it times the jump onto the trash cans perfectly. In level 3 and 4, you are then supposed to be primed to jump at the same time - which if you are at the bumper of the cars you will be flung up into the air to collect all the candy. This will also fix the camera issue you are having on level 1:4, because the candy to fix the camera is at the height of the second propelled jump. I have found that my psychological trick was not enough, and I need to spell it out. Or even better, fix it with a jump buffer like you said. Props for timing it though. That is HARD.
If you feel like trying the levels again, using the rear car bumpers to fling you into the air always gives me a lot of pleasure. Also, there's a mushroom on the ground for level 1:5 to help you time the jump so you can stay in the air. And warning, 2:1 ramps the level difficulty WAY up throughout the level.
I'm glad to hear you liked the music. Yes, it was created using AI, but I did put effort into creating something that I thought was a banger of a soundtrack and helped tell the story of the game through music. (On level 1:5 the soundtrack is Skele-Tom humming and singing his own theme song to himself while he steals candy.)