Thank you for playing it and all the nice words!
It's completely fine to not do those bonus rooms, they are completely optional and I made them way harder on purpose, only beating them once to make sure they are doable. I'm happy enough that some people are just finding them!
And I thought about enemies, maybe at least having like a boss you shoot down, but I did decide to no have any just to keep on the minimalism theme (in that case just basically having 1 type of enemy/hazard). I did have a couple of ideas for rooms where you would have to shoot them a bit more but didn't find where to fit them nicely. Despite that I've seen a couple of people shoot down the hazards in order to find solutions to some rooms that I didn't expect to, so i'm satisfied with that.
And I'm sorry about the softlock at that one checkpoint, I kinda rushed those secrets on the last day so that issue got through, I already have a version with it fixed that I will upload once the rating period ends.