If there are no Sidehoppers in the bottom right corner of their pen, roll down and carefully place bombs while luring and killing them. Otherwise, go down into the hallway below and carefully kill the two Reos and lure the Sidehoppers to the left. If they don't stay on the left, exit this hallway and enter it again to reset the camera and try again. Then IBJ up to the item above.

Requires:

"canEnterGMode"
"h_canArtificialMorphIBJ"