New Version (1.01) made available this date (26/07/2019).
-> Enemies no longer flicker directions when they reach the players Y position.
-> Lexiko Scroll 4 (Freeze enemies) no longer causes inactive enemies to seemingly pop out of nowhere if you move up quickly while it is in effect.
-> The tree drawing routine was made a lot smarter: Less awkward "tree over tree" drawings should occur (tree groups will remain, only the drawing order of the trees is now better).
-> Intro (main theme) has received a quality update (less cripling sounds, more audio quality). Credits and thanks to DRocks.
-> Player progress is now visually displayed: The game window frame will change and become progressively ornamented as the player moves up (starting at a certain point).
Thanks to all who commented thus far