Haven't played the prologue before, so I just played that, and then this level. I'm impressed! A lot of great work on custom tileset stuff here, gameplay was quite engaging, and the story interesting. I'm looking forward to the next installment!
If you want criticism, though, here's some. It's always nice to have many different environments in a level, and while you certainly had all kinds of areas - busy ones, empty ones, linear, non-linear, etc. - running around the same tileset all the time becomes a bit tiring.
I enjoyed the dead town segment most because it was a much welcome rest from concrete - just like Juni said! Except that when you enter the cave, it's built on the same principles - straight paths mostly. It would've been nice to have a visual change, and have a more natural terrain. The natural progression was further compromised with the administrator's gauntlet - it looked too much like the testing facility! And it was a bit too short, for my taste - ends much too quickly.
That said, I enjoyed the level very much. I didn't think dialogue boxes ruined the dynamics - they were very nice, and you have a great sense of humor. I laughed a lot
And it was great to find all the little details you've worked on - the flashing lights, SFX stuff,.. So yeah, like I said, I'm very much looking forward to the next part in the series, or any other level you're working on