Doomsday

Spoiler: Tricks

1.Low ceiling 2.Eye elevator with bot

Spoiler: Hints

1.Red bricks are the place where B need to stand. 2.When bot push the ball on the second floor of the big tower, B needs to stand on the right place to stop the ball rolling.

If you can't pass, check this

Spoiler: Gameplay sequence

1.Push the ball on the church roof.
2.Push the two balls on the first floor of the big tower.
3.Let PR get to the small tower with the help of ZR.
4.Let PR get to the top of the small tower first, get the star, then fall off.
5.PR should put the ball FIRST, then get stuck.
6.R came out. Let ZR go to the second floor of the big tower to push the ball, then to the top, get stuck.
7.Let R push the ball in the church, then push the ball between the two towers.
8.Save PR with eye elevator. Get the two stars.Let PR go to the top of the tower to push the ball, then B can get to the top.

Made life difficult for myself by forgetting about the ball on the church roof so I had a lot of complex herding. Also had a different bot pushing the ball in the main tower. Excellent challenge.

@ridgerunner Thanks for playing! And actually you are right, the use of R and ZR can be exchanged