Cool game! Nice sprites and the music and SFX are good, loved the part where you have to swap the jump for the cannon.
There is one part at the end of the first level you can’t see the floor is a little bit confusing and a little hit and miss and if you press space and W together you do a super jump haha (don’t know if it was intended).
But I can see the potential in your prototype, would love to see more level and more trade swap mechanics.