Nice level, Sidepipe! Having played both versions, I can now give my opinion.
I like the Forest walls that overlay the Factory corridors. Nice combination of environments.
The two drones trapped in boxes in the walls were...entertaining. I must've watched them for 5 minutes! :laugh:
The randomly stacked boxes near the exit seemed to suggest a hasty evacuation of the Factory. I like it!
The passages are (in my opinion) too narrow in some places, especially near the "waterfall" area.
The forest walls are almost too bright for the other scenery.
The short mover blocking the exit can be destroyed by the wave gun. Try making the box Not Solid, or giving it -1 health.
Overall 4/5, great level, and I can't wait to see more!