Thanks for the feedback!
I did indeed already notice that people were having a few problems with the controls, but did not know how I could improve. This feedback really helps and I'll look into it!
When it comes to touching the water: Sadly, I could not figure out before the deadline how to properly deal with that issue in such cases (it happens when the player goes down in high speeds and touches both a 'normal' and a water tile).
Thanks for the feedback on the spikes. I did notice that in, for example, geometry dash, the hitbox was smaller than the visual model.
I'll look into all these problems and hopefully have them fixed/altered in the next patch.