Thank you for your feedback. The game is kind of rushed and I unfortunately had to submit it in that condition despite knowing that there are some issues.
I'm aware of the clunky control, and if you mean it the same way I imagine it, it is tile collision problem. On the engine I used to make this, some tiles are sometimes slightly jotted out despite precise position, and so when walking, jumping, or landing, sometimes there are bumping and sudden bouncings. I have tried to find a proper solution for it but unfortunately couldn't find a good solution so I had to submit it with this clunky control - thinking of using another engine next time to avoid this problem again.
As for the map, I suppose I could've made the layout much simpler. I will keep that in mind for my next game jam.