Funny little platformer! The graphics were very nice and the different mechanics were easy to understand.
I found the movement a bit too hectic, sometimes it was hard to control where to stop a jump. They accelerate real fast. But it wasn't much of a problem. I noticed I had to stop holding a movement when I changed to the other character, it wouldn't change them and already start sending the input. But that may just be nitpicking.
I liked the music, though it could have a longer loop, felt a bit repetitive even with a short playtime. The sounds were good and fitting, but the jumping sound could perhaps be toned a bit down.
The menu is worth noting, very beautiful presentation. The level design is also impressive for such a short period. Congratulations!