Day 3:
I overestimated my 3d skills and Try to make every area connect seamlessly. It took me almost a day. The result is not good enough.
Day 4:
I started again with one scene per area and make the transition between scene. At the end of the day, I have first area finish with all scripts done.
Day 5:
I added ambient sound and SFX to make the mood of the game when I testing. It starts feeling spooky. I continued working in the second area.