Thank you for the feedback!! Ye, Level 2 is the hardest level in the game imo, just because of two tricky jumps. Maybe instead of a checkpoint (because i don't really like the idea of it, even tho i do see the need for a system like them) i could do a button that unlocks a shortcut after the first tricky jump...
...I don't really know what you mean by "feels like this is a battle between the player and the author", but i'm happy that you find it funny anyway... (''^c^)