Checkpoint 29 is just before an intense escape phase for the girl, supposedly the cause of multiples game over.
Plus the use of the cannon at the top of the tower in the middle of the mazer area, is necessary to pass this phase.
But the respawn point of the robot is IN the tower and not ON TOP of it.
This lead to situation where the player want to redo the difficult phase he just failed, goes in it directly with the girl, and when he have to quickly fire the cannon, he switch to the robot, and realize is one level too low.
I recommend to put the respawn point of the robot next to the cannon.
Plus the use of the cannon at the top of the tower in the middle of the mazer area, is necessary to pass this phase.
But the respawn point of the robot is IN the tower and not ON TOP of it.
This lead to situation where the player want to redo the difficult phase he just failed, goes in it directly with the girl, and when he have to quickly fire the cannon, he switch to the robot, and realize is one level too low.
I recommend to put the respawn point of the robot next to the cannon.