
I just let the bad dude continue to shoot at Stinky, who already exited, and then Qookie goes in the tp covers the cyan button gets the last coin and rafts to the exit lower right.
Initially Qookie pushes the blue sphere left then the the boulder, follows goes around takes the coin pushes the boulder back and follows. The boulder goes up Qookie goes back and rafts into Stinky who then rafts back and forth and exits.