Nice controls and lots of secrets 😉. I had 2 bugs with the frog boss, first it slided towards me and killed me, which didn't seem intentional. Then it froze mid-air on the right side of the screen, so it was easy to kill, it balanced it out in the end 😆.
I also expected the full screen button to make the game window bigger but it is still small in full screen, nothing some browser zoom can't fix, though.
I liked it overall, well done!