There's been a switch up to how I should layout this mini game so it will work. I'm not entirely sure how yet, coding is difficult.
Instead of having the background scrolling, the camera will be the parent to Fletcher and will move along the map to the finish. Fletcher will be at one end and only be able to move up and down using the mouse.
This is so when he hits an obstacle the camera will be told to slow down or pause which means Kahu will keep going to the finish.
Kahu is now on his own animation path to the finish line, unaffected by the obstacles.
I've gotten the text triggers to come up but now it's a case of stopping Kahu if Fletcher wins and vice versa.