Hmm, this is pretty cool!
I think the voxelly style really fits the 2.5D gameplay. The environments are cool and well-put together. The set-piece with the bus is especially tragic.
The "AI" voices don't sound particularly great. I was actually surprised to learn it wasn't just generic text-to-speech synthesizers. There were very strange flubs in pronunciation ("reprimand" stood out), and it was generally unnatural in a not charming way.
All-in-all, good work!