Finalizing Abandoned Archives cave layout

So this bastard is really getting close to it's final form. Here is the layout of the entire cave. The white rectangle marks the size of a single game screen. I did end up zooming the camera out by around 20 % so in game everything looks a bit more detailed and a slightly larger area is visible.
The blue outlines mark all the areas that have variations or optional rooms that have a random chance to appear in a given play through. Some of these have a 70 percent chance to show up, some as low as 25. I can always add more but for now these are all I wanted to add and hopefully they provide a decent bit of variation on top of various paths you can take through the cave. Some of these areas simply block a path and open another, some are shortcuts and some lead to semi secret rooms with upgrades or even small arenas for rarer monsters that can only be found there.
Now I need to finalize the monster placements. I will be adding some randomness to that as well, though I won't leave it entirely to chance or balancing would be impossible. I want to have two or three options for most rooms to ( so for example you might find 5 low tier monsters, or 2 higher tier ones), and there are a couple areas closer to the end of the cave where it pulls from a much larger list of possible monsters. I actually wrote a monster spawner script months ago, so it's mostly placing things around and seeing what I like now.