Firstly, an apology to players who have encountered an issue with the UI in the second level, The Swamplands.
Thanks to player, Hairy Mary for messaging me and pointing it out.
Long story short, in fixing a problem, I created another, namely forgetting to turn the level UI back on, which would result in no ESC menu and the UI collectable scores being invisible.
Silly mistake, so sorry if this has vexed any players. I've just updated now, and everything is above board again.
Thanks again Mary! ːrarebutterflyː