Cute concept! Love that each goon has their ability and you had to change between them in succession to clear some of the challenging level. Too bad that the long goon didn't had much spot light except the final on where you can extent its neck to grab the key.
I would suggest there's a ui element to tell each button turns your to each goon, kinda to remind the player and refine the normal goon dash to be usable even with movement input, currently it feels a bit cumbersome to use it.
And of course some use of music and sfx would definitely improve the game feel! That said, nice job!