(Gee it's too bad the forums don't have a spoiler tag! Most spoilers are general or vague, but you have been warned.)
I suppose I should have expected a bad ending after following orders on the first playthrough, but it was interesting to see how things unfolded. Well, as much as the unfolding was actually visible! I was not expecting that kind of story (I had never played a game of this genre before). It really wasn't apparent to me how bad things were getting in the world from the phone news messages until just a few days from the end. It was all isolated incidents, and then suddenly there was hardly any grass and hardly any people left alive??? I killed two blades of grass out of bajillions, and that somehow killed all the others? By the time it was even apparent that things were getting bad, folks were telling me it was too late to turn anything around.
I really hate that cat.
I did a second playthrough and did much better, even taking over the boss's job! Not through outright defiance, but paying more attention to the profiles and making decisions on wider impacts people might have on the world if they lived or died (which wasn't always clear, and sometimes directly opposite to what the profile might imply!). That playthrough also featured more people who clearly would have such impacts, so maybe there was a bit of a luck of the draw in my first playthrough where that wasn't as clear. I also made a point of being a bit cagey in dialogue with the boss more often than directly confrontational. That was fun.
My two playthroughs seemed to hit opposite ends of the spectrum, so it'll be interesting to see what else I can uncover on another. I noticed that the ending things I unlocked were all pretty common %-wise, so there have got to be some amusing edge cases hidden in there!
Items & Decision-Making
I bought the lamp early on, and had some fun seeing what it revealed after I made my choices. I might have preferred a lamp that gives partial info beforehand, to info on just your decision afterward. But, I noticed on my second playthrough that it "remembered" my choices from the earlier playthrough, so that info will accumulate if I do more playthroughs.
I also bought the eraser. I was annoyed by it being good for a single use. A couple uses (3–4) would have been more interesting to me. It did reappear for sale after I'd used it, but that wasn't satisfying to me.
I bought the mirror and talked to it. Nothing it said seemed helpful, just vague admonitions and warnings, nothing actionable, so I stopped talking to it at some point. The talking bit didn't add anything to the game for me.
Although the phone wasn't purchased, I found it odd that I couldn't do "extracurricular" research on any of the subjects, it was just a twitter-like newsfeed instead of an actual smartphone. I really wanted a bit more to do than just read the profiles to decide who lives & dies. Even talking to somebody at a neighboring desk would have added some fun: "Hey Mort, what do you think of this retired gardener who poses for an erotic artist?"
The rest of the stuff for sale just looked cosmetic. I bought a few of the outfit things, and the coin and the piggy bank, but lost interest in them pretty quickly. Maybe some items have more to them than I know. I might bother to buy them on subsequent playthroughs since there doesn't seem to be much else to do with money, and you do keep what you already bought when you start a new playthrough.
The Bar
The bar seemed a waste of my time & money. I talked to everybody, and again got nothing actionable, they were just quirky characters setting the tone. I bought a few drinks, that didn't seem to do anything either, so I stopped buying drinks too. Maybe subsequent playthroughs would reveal more options/info based on my decisions during the week? The archivist hinted at some possibilities....
Bugs
I didn't encounter any actual bugs, but there was one annoyance: mini profiles don't move to the top when clicked on. So I had to keep shuffling papers aside to see the ones underneath.