Thanks for playing. And good job on reaching level 38, that is no easy feat!
Yeah, sometimes deciding where the collision boxes should be was difficult, though I tried to skew towards the forgiving side, bit in some cases I should have been more lenient with them. The walking spikey enemies are the worst offenders in that regard, I feel like.
I'm super glad you liked the variety of levels as that was one of my main focuses for the game (next to satisfying movement).