Yeah, the limitation of only a single level made me a bit frustrated since I originally planned to make 5 levels which increase in difficulty (probably 3 easy-medium ones and two brutally difficult levels).
That section is quite a bad training section for the hopping/jump mechanic. In hindsight, I should've made it more linear instead of making it too open. Probably have an arrow which indicate the next checkpoint, too.
Thanks for the input, I'll keep that in mind^^.