Ooh, I think you mean the kitchen area with 'walled off'. I can see the confusion because of the small difference in color between the floor tiles and the walls. My bad for also never really introducing it properly :)
I thought I'd placed a sort of 'cutscene barrier', where you'd walk back a bit and play a dialogue, if you hadn't met a certain condition yet, which was, in this case, collecting the 3 fly lenses. Apparently it didn't work :P
I also agree about the map being way too large. I can recall I was just plopping down some walls in the last hour before having to submit it, and when I finally got to playtesting, there wasn't any time left to make any changes :/
I think if I shrink the map down, the encounters will naturally also seem less frequent, but it wouldn't hurt to also shrink down the encounter rate :)
You didn't really miss a lot when you stopped, except for one more section with the wasp enemy, which has the ability to inflict paralysis, other than that I don't think you really missed anything important. I hope you did get to see the woodlouse, which was in the same area as the mice/rats, because it has, in my opinion, the best attack animation :D
My idea was to scale down the damage on the Poison Shot and Raygun attacks to make them less overpowered, seeing as they could hit enemies regardless of their position. Also a nice idea of making the Poison Shot locked to your current row. I think that, together with a bit less damage, would make the attack way more balanced. Long range attacks kind of throw the movement system out the window in the current version :)
I'll keep your feedback in mind for future versions, (and maybe for this game, if I ever continue working on it)! I hope you enjoyed the game, and thanks for taking the time to leave a comment :D