As mentioned above, I tested the enemy art technique: 2D splines on planes using normal maps. The outcome was: if the lineart and normal map are clean enough , the style could work and it could save us a lot of time and polygons. I also wrote a quick movement script for the enemy to make it float. Here is a normal map test:
Also, tested how the sprite animation would look. Will work on more transitions next week.
I also updated and uploaded the Art Document.